My first car was a '64 Chevy Impala SS. It had a 401. My mom's neighbor was a wrench head. He redid the heads, polished the valves, honed the cylinders, put on dual quads & added a 3/4 cam. Then, he put in a larger, newer Pontiac trans & a pick up rear with posi trac. Then, a real nice chocolate brown paint & white interior. He said that it had 500 horse. When I raced, I always won. Nothing could match my sled. I beat vets, jags, GTO's, Mustangs & 409's, 413's, 396's, 428's. I always won. I gave it to my little brother when I enlisted. He sold it. Chevy is faster & Ford lasts longer.