ckostura
Huge....No. You will feel a very slight, just noticeable increase, but not what your expecting.

Matt
You will definitely notice the difference depending on the size exhaust headers and exhaust pipes you run. I would personally go with 1 3/4 on the exhaust header and a 2 1/2 on the exhaust pipes. You will probably gain around 20-40 hp with that application depending on the catalytic converter and muffler you run. Hope this helps.

20G8J8FY
It may give you another 5-10hp at high rpms that's about it. You won't notice it.