[20th1519]

The difference is exactly how they are described. Shortys are a good replacement for factory exhaust manifolds that bolt right up to the stock exhaust. Long tubes will most likely require you to get an aftermarket H or X pipe to mate up to your factory exhaust. Long tubes will give you more bottom end grunt. I have had both long tubes and shortys on my 302's and prefer long tubes due to the extra torque and the sound. Either way modular 4.6's with exhausts sound nasty.