Well ive read everywhere that our truck will accept LS1 parts, cam and intake and such. Is this true? is it just a direct replacement or do i need some other things to complete this? I have a friend that is willing to sell me his stock LS1 parts, can i just bolt these onto my 5.3l? Im pretty much stock except for intake and exhaust, and im looking to get into bigger things like this and i hear cam and intake swap off a ls1 get some good gains. Thanx for any input.