Keep the OS Speed stock IMO. Run the T-2060 pipe, but the JP-3 or even the JP-4 pipes work. The TTR/AE 2035 also work. The alternative is a modded V-Spec. It will run a litle less then the Speed.
At our local track tonight, TQ was set with a Maxy's Modded V-Spec driven by Maxy himself, and the actual winning car had a AL OS Speed. Same for the sportsman class, winner was a AL OS Speed powered car. Track has some jumps that need punch to clear right off turns.