has anyone tried this final drive its 4.30 http://www.shaneracing.com/protege.htm what is the final drive of our cars i cant rember nor can i find it. would it be waste of time and$$ when changing out clutch/flywheel. im trying to save for a carputer but my clutch is going bad i have found the clutch/flywheel ACT street with mazdaspeed lightend flywheel and while i have the tranny out and apare why not try and make it stronger/ acellerate faster.