[Paul F]

Pep Boys is correct. During the early '70's, when first trying to deal with pollution control laws, Ford made a 5.0 351. It used the 351 block with the 302 crank, rods, and pistons, making for a 5.0 liter displacement. It provided a low compression, low pollution solution. This was in production only in 1970. Very rare, but Pep Boys has a keen eye and well trained staff.