Using the PN from JeffB2 and the '69 Mustang tip from Deuce Don I found number 2257 for the motor mounts, and 2253 for the tranny mount. They are a bit more compact than the 2370/2371 units, provided the span is right for the chassis mount. Thanks, guys for getting me on the right track. I was stuck in the '80's and '90's and getting nowhere!!