Originally Posted by DS Motorsport

The 2604 or the Capricorn 2662 work best.
I like the 2604 the best, the 2662 gives it a higher top speed but less bottom/mid power.

The 2630 is a useless pipe if you ask me, uses a lot of fuel and creates a lot of heat with less power as most other pipes.
If you want a nova pipe get the 2660 instead.