LTs= long tube headers
H pipe is the mid pipe of exhaust system(needs to be a shorty version cux of the LTs)
Go to AmericanMuscle.com they should have everything I'm talking about if not go to a local Muffler Shop(They are everywhere cause little ricer cars are always putting loud annoying exhaust systems on) and tell them what you want and they will set u up. AmericanMuscle.com also had videos of exhaust sounds! Pick your favorite and go from there!