P partsguy9 New Member Jun 20, 2018 6 0 1 wisconsin Jun 20, 2018 #1 Jun 20, 2018 #1 Hello, New guy here with a 73 Mach1. Does not have the original motor. Narrowed it down to a 351c or 351m. How can I be sure?
Hello, New guy here with a 73 Mach1. Does not have the original motor. Narrowed it down to a 351c or 351m. How can I be sure?
