gotta question... i'm rebuilding an 89 5.0 h.o.... converting to a 600cfm carb( i hate efi sorry)... i purchased a camshaft from someone (compcams 31-234-3) and after tearing the engine down and noticed that the factory cams firing order is very different from the new cam that i was going to install.... can i still use this cam even though the firing order is different or is the crank different in the 89 h.o. from the older model 302's?.....hhhhheeeeeeeelllllllpppppppp....!