360 horsepower guessing game

Everything on par with a 340 or slightly hotter. Really depends on this mystery cam.
Factory is pretty mild lots of steps in duration between that and a .500 lift cam and each being worth 15 ish hp. So 300-350 hp

Headers are nice and probably add 15-20 hp but under 350 hp not really necessary. Once your running a lot of overlap then becomes more mandatory.