ok here's what i have a 355 with that is stock i am wanting to put a 280 cam with a 480 lift but i am still deciding on the cam and i am wanting to put a good airgap intake i wasnt going to get any different heads for it but my buddy said to get 400-450 horses i need to get a good set of heads i do not want to over cam the motor and i want it to have some good tq as well as hp i want the truck to be able to move so i am trying to get a min-400hp i am also going to put a set of headers on it and 2 1/2 pipe or 3 inch pipe and going to use some flowmasters aslo iam eather going to use a 700r transmission or a 350 turbo i have not decided one of my buddys says he suggest the 350 turbo over the 700 R but i would like to have overdrive but if i am going to be pulling the tranny everytime i turn around i would rather use the 350 turbo i dont wanna use the 400 turbo cause i was told it takes 60 more horse power from your motor in the rearend if i use the 350 turbo iam going to use 373 gears if i run the 700R iam going to run 410 gears in the rearend iam also wanting to level the truck out to where it dont just spen when i hit it iam going to have some 50 inch wide tires in the back by 15 inch tall on some 10 inch wide rims this is my first build as far as motor goes i am being very picky about it because my father in law always said everything has to work together or you can be loosing a bunch of horsepower that you could be useing