johnsoa,i have the stock clutch on my car,i just assumed they made a twenty for your clutch.you know though everyone tells me all the centaxes out for the t-c3 arent as good as the stock clutch.id stick with it,just a suggestion.hey fuzz man,you ever use your stock pipe ,i bet you havent ,i noticed right off the bat the pipe your talkin bout is way way slower than the kit.its a joke im tellin you junk it.bout yor gearing,you say its a short straight so stick w a 4 tooth difference,an just run what u prefer for first.6 tooth difference to much for a small straight,itll never wind out,an if u try to make it engage quicker youll be hittin second on the infield.go with a 20-24,an a50-54.