Eagles and Apache heads run a different spring. I use a PAC 1220 which is an ovate beehive big block Chevy spring.

PAC has a 1535 for the older heads that is a direct drop in for the old 5.7/6.1.

My Build thread: Let the hemi swap begin!

1968 wanna be pro touring whatchamacallit with some fancy stuff and a new roof skin.