Nostalgia TF Stage II 426 Hemi T/F Cyl Heads – 2.400″ x 1.925″ valve dia. Iron seats, 11/32″ Exhaust valve guides, 9/16″ Bottom row head stud inserts & .025″ Jr. Hoops. 4.187″ dia Chambers. (pair)

Muscle Head Stage V: Program V3-P3-F12, 2.400″ x 1.900″ Valve dia, 102cc chambers. Std Copper intake valve seats, B5 Exhaust valve seats, .025″ Jr Hoops, 5/8″ Top Row & 9/16″ Bottom Row Head stud inserts. 2.600″ lifter spread, 12ø Exhaust Flange. (pr)