Or, turn your pipe down a bit and not so straight out so as to have the exhaust gases (and oil) go down more to the pavement and not flying in the air where it will land more on your rear tire.

I've used a couple of excellent pipes, it all depends on what you are looking for. Torque? Top end?

Torque, one of the best pipes for torque is the stock single chamber GT pipes.

More top end, still tons of bottom end, try the RD Logics Turbo II pipe.

For even more top end and still have better than good bottom end. This is extreme and only if you go with the 18CVRX. Try the RB Concept TM-01 pipe (it's a big block pipe). I run this in my GT and a 18CVRX, killer top end and the damn car still wheelies at all the wrong moments! (time to loosen my slipper a little)