Engine, rear gear, Tourque Converter, Tire size info/question for the experts

Pull the starter and remove the dust cover. The Turbo Action part # and serial # are stamped into the converter. Give them a call and they can tell you exactly what the converter specs are.
I have found that each step in gear ratio change or tire diameter increase reduces RPM by approxiametely 200 revs. I run a TA tight 10" S800 converter in my car.