so ive been working on my truck, f150 flare side 5.0. ive bought cold air intake, cobra intake upper and lower, fuel rail with regulator. high performance injectors, and headers. next is cam, lifters ect. i have only installed the cold air intake. ive been looking around for gt40 heads and im just hoping this all fits. this is my first project car, im not a mechanic but still pretty mechanical. im struggling with buying the correct cam. flat tipped camshaft? rollers? springs, seats? Ive done my best research and in theory it should all come together. any advice? i could use some advice because everyone who i know thats a "car guy" seems to be not such a "car guy" after all.