if i get remanufacturedgt40p headswith stock springs,valvesand rockers will i need to be upgrade those parts?? (i am also getting an e cam, typhoon intake, 24 injectors, mass air, fuel reg., fuel pump etc.)
if i got reman. gt40ps with upgraded springs, valves,1.6 rockers and a 5 angle valve job, how much more of again would i have over the gt40ps with all stock parts?
would it be worth it? i am on a tight budget

 

can you get them w. no springs/retainers/locks? if not, get which ever is cheaper, because your upgrading them for the cam either way

 

you don't have to upgrade the valves themselves but you do need to run stiffer springs with your upgraded cam.