Jerry Heasley
December 11, 2017

This Rare Finds story started on October 30th with an email from a reader, Kevin Boyer, requesting more information on a Japanese Mustang that had been the subject of a Rare Finds. Later, Boyer told us that he had located a 1970 Mach 1 Super Cobra Jet in a barn about an hour north of his shop, Boyer’s Auto Body of Cumbola, Pennsylvania. He had not picked up the Mustang, which remained untouched with all four tires flat and dead mice on the floorboard.

I asked if I could go on the journey with him to get the very rare muscle Mustang and Kevin seemed okay with my request. He already had an agreement to buy the car, but was getting his finances ready to complete the deal. What you are about to see is Rare Find (which I have written monthly for 26 years) take a different form in a video produced from a point of view manner, from behind the camera conducting the interviews and taking static and moving pictures at the same time, which is a juggling act. This video is more like a field report that readers can watch and get to see and hear an exciting Rare Finds story as it is happening.

Boyer had found a 1970 Mach 1 with a 428 Super Cobra Jet, which is rare enough, but exceptionally rare with the Drag Pack option. Drag Packs had to be ordered with either the 3.91 or the 4.30 rear axle. Although the patent plate on the door and the tag on the rear axle of this ’70 Mach 1 was missing, Kevin Marti confirmed this car came with the 4.30 rear axle, wow. In the non-Shelby lineup, Ford produced 331 SCJs with the 4.30 rear axle and 620 with a 3.91. Finding an SCJ with a 4.30 is a Rare Find for sure.

On Saturday, December 3, 2017 we drove from Boyer’s shop in the little mining community of Cumbola north to a barn outside of Danville, Pennsylvania on our Great Adventure. Please join us on that trip to extract one of the rarest high performance Mustangs ever built, a 1970 Mach 1 Drag Pack with a set of 4.30:1 gears.

Have a Rare Find?
Note: Contact Jerry Heasley at ( if you have a barn find that might make a column or a video as seen here. Maybe we can come out to your neck of the woods to do a similar video and you can be a reality star.