it was mostly stock, and it was a 01, i won every race against a lt1 except one, but a lot of people said my stang was faster than stock, but all i had was cai, and i dont know if its colorado or what but but from what i've seen lt1 vs. new edge is a drivers race, but a ls1 will beat a new edge and a s197, and by the way a terminator will smash any camaro or t/a stock, and im sorry but a stock lt1 will not beat a mach 1, but of course this is a gm site and evrybody hates mustangs and they're the slowest cars in the world, but i love both so forgive me for not being bias towards one