ok, i'm rebuilding my 7 bolt engine, and i noticed they have different rod lengths. i'm trying to determine which rods i should use. i'm running cometic hg with arp studs, and 20 over wiseco pistons, and i'm probably doing a floating assembly setup(because i was told that was a better choice). so i'm wondering which length. ive found sizes from 147-150mm in length. any help would be appreciated.