The purpose of the Boss 429 Mustang World Registry is to gather and compile accurate historical information about these rare Nascar Mustangs. The registry was established in 1974 by Stephen B. Strange, and with the help of the Ford Motor Company, Kar-Kraft engineers Fran Hernandez & Don Eichstaedt, and enthusiasts the world over; have been able to put together correct historical details, photographs, and statistics about the famous Boss 429 Mustang. We still need your help though, in gathering missing information & photos about the program. Today, we are working on publishing a complete Boss 429 Mustang World Registry book, ISBN 0-931417-04-X, scheduled for publication later this year.
Kar-Kraft as it looked in May of 1969. Located in Brighton, Michigan, here Boss 429 Mustangs were hand-assembled, for shipment to selected Ford Dealers, all over the United States. Do you need help in verifying a Boss 429 Mustang serial number or Kar-Kraft KK 429 Nascar production number?
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Official home page for the Boss 429 Mustang World Registry... Historical document archive-image library, as part of a For-Profit Business. Specific KK file research & photo-copy service, requires a nominal fee! Protect your car's provenance & historical importance... It will define & protect a genuine KK 429 NASCAR chassis vehicle... from the fakes and counterfeits...most likely to be out there now!... Other concerns: re-popped inner fenders, re-stamped engine cylinder blocks... Registry inquiries are treated as confidential... Inquire BEFORE you make that purchase!... Registry file information is offered as a courtesy service to our customers. Boss Performance and the Boss 429 Registry believes to the best of our knowledge, that the information conveyed and contained here, is accurate. However, due to the historical nature of the subject, it is ultimately the responsibility of the hobbyist to independently verify the accuracy of such information... Our Registry files are NOT posted anywhere on the internet or stored online... We maintain "hard" paper files and photographic prints...Real photos!... Along with supporting factory documents, ads, auctions, etc... which go back to 1974 and before...to many of the original owners!... We also have the complete KK-Brighton engineering log books... Complete KKX C9ZX to Ford engineering blueprints... rare original KKX factory Boss 429 parts & detail pieces... and Ford Photo-Media Library negative list...as an historical archive... Any inquiries on a specific vehicle; do require a KK number or a VIN number... Nominal Registry research & copy fee per vehicle, may be required...inquire... Correspondence pertaining to a particular vehicle may include detail specifics... which become part of the car's known history file... Why the big disparity in price on Boss 429 & Shelby GT Mustangs? Some cars do well at auction…others are stuck in the mud! After almost 55 years of owning & tracking these KK cars… we know why…it’s REAL collector car appeal!… Quality cars, usually go into multi-car deep pocket collections… With KK Boss 429’s, you gotta know where you’re at, so you know where you’ve been… Example: Bonafide REAL KK matching number low-mileage survivor car… with provenance history and all the right component parts… can easily add $150K-$200K to value! Investment collectors need to be WARY of the drivetrain and component parts… Is this vehicle Ford numbers matching? Are the rare dated components, really there? Are there clever restorer restamps that don’t jive with the KKX and EF dates? And then you will probably know, where you will be heading! TWB3 once remarked “you can never pay too much for the right car”… IOW…you may buy early before the market finally catches-up! We’ve been hitting a few high-end collector car concours events… Wynn Concours, Pebble-Beach, “big britches” show & shine events… and we feel quite confident that quality survivor KK 429 Mustangs… with all the RIGHT STUFF components…(no cheap BS crap)… will be heading vertical!…In our opinion… The “Right Stuff” that’s what the astronauts called it when going to the moon… that’s exactly what Steve Strange calls it too…the “Right Stuff components”… when taking your KK Boss 429 Mustang to the moon (auction price wise). All other effort is what is called a “vinnie”, so cheap ya’ squeak! and it will come right back at YOU come auction block sale time. Example: We recently viewed a car the seller claims lots of NOS parts, NOS fender decals, except they were installed in the wrong position on the fenders! C’mon man, we’ve had the original Kar-Kraft assembly-line blueprints with exact measurements in our last book! This kind of complacent disregard by any restorer effects the whole genre!…AND YOUR KK Mustang’s bottom line! Copyright 2022 & 2023 © Stephen B. Strange & Michael S. Strange...Boss Performance… All Rights Reserved… 
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Historical Archive Established 1974
Boss 429 Registry
PO Box 8035
Spokane, WA 99203
USA
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