so ive been working on my truck, 94 f150 flare side 5.0. ive bought cold air intake, cobra intake upper and lower, fuel rail with regulator. high performance injectors. I have only installed the cold air intake. ive been looking around for gt40 heads and im just hoping this all fits. Ive been told the stock cam is great just get 3 bar heads off a 95-96 explorer. Then ive been told I have a roller block so get a roller cam and lifters with it. It has MAF which helps controll the firing order? this is my first project car, Im an electrician, not a mechanic, so I could use any advice you guys can give. I have no doubt in my abilities to install the parts, I just dont want to waste money, time, busted knuckles, ect. on parts that arent going to fit, or a waste of money and time.