do anyone know how many teeth are one a dx 4speed tran?i bought a new clutch for my car(90 crx dx)the clutch has 21 teeth, i was going to put a si tranny on it but it has 20 teeth,so i was just going to replace the clutch and put the 4speed back on until i find a 21 teeth si motor,that why i was wondering if my 4speed has a 21 teeth shaft