actually i can read just fine.
FP3 and FP4 cams: "Dual valve springs RECOMMENDED"
FPX cams: "Dual valve springs REQUIRED"
if he's gonna rev an FP cam to 7500, he'll probably be fine if he pays attention to how he shims the springs. if he wants to rev to 9, then hell no!
now quit arguing semantics with me and cluttering matt's thread.
if you'd like to argue further use the PM feature. (-_-)