Why not the turbo version from the FD Rx-7? Should get tons of power from that set up. Hopefully, the new weight to TIR for rear and four wheel drives should slow down the turbo's to the EP power/speed level.
If the new TIR/weight limits don't reign in the turbo's, then either the class will crash as all the N/A cars will go somewhere else or the turbo cars should get tossed into GT.
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