Manley stainless steel valves 3 angel valve job. 10 degree locks and steel retainers.2.19 intake,1.71 exhaust.Comp cam springs part#929-16 with 80 passes on them,spring pressure backed off all winter.No rocker arms. Heads and intake have been milled .030 to increase compression.No porting or polishing have been done.Heads were on 351 cleveland bored .030 over pop pistons, stock length rods .1980 mustang 3200lbs with driver ran 10.43 at128mph.