Mufflers ?

At your guesstimated HP level, a high flowing 2-1/2 muffler will suite. According to D. Vizard, the Hooker Aero Chambers (or the DynoMax super turbo) will do just fine. Back Pressure will slow the car down.

I have run the Hooker Max Flo mufflers before. (Same as the DynoMax Ultra Flows.) And the Dyno Max VT’s. I didn’t like the sound myself on the then combo.
The 3 above units are the least restrictive mufflers.

What we need really is known equal flow tests. Like cams duration @ .050 rates. We need the same for mufflers.