Hi I am considering getting the trickflow heads and cam package its the genx 515 kit. They say this kit alone on a stock LS1 will push 515 hp in the motor. These numbers seem a tad sketchy to me I was just wondering if anyone who has the kit can varify this

 

I guess it's possible. 515 is pretty steep to be bolting on a stock Ls1. There's only one way to find out, for what your going to pay it better be.Now getting it to the ground is another adventure if your stock!