I think from prior experience, the 88-91 CRX-Si was very quick in the right hands on both short tracks like Lime Rock or twisty one like Nelsons UNTIL the comp board decided that 300lbs was a logical addition to the car.
Once that weight penalty was applied, all of the performance advantages (like brakes, neutral handling and power to weight) were invalidated and the Miata became the performance leader.
Too bad since now ITA is another Mazda class
Jake, you might want to check your numbers, the Mosiers have not dominated in a while, and by event statistics, I suspect the CRX is not doing as well as it did (or was capable of) after the weight gain.
Efrain, are you bailing out? In my History, CRX was very dominant. Throw a 5.38 in the Corolla and you will do ok though