car has a street tune, not a dynotune (yet), I have 40 lb fuel injectors to install, I need to change my harness, I was told to run the GM 3 layer steel headgaskets because they would handle the spray, LS6 clutch, but I don't like it and yes I have a stock transmission(I need to upgrade it, I'm currently looking for a T-56 countershaft. anybody have one? its for my spare tranny I'm building)