i need to know what all the trans labels are for d series and i need to know what they are in stock if you could. like s20 = cx i think . i need this since im picking up a trans today for a friend and i need to know what he has i know he's getting a s20 but i dont know what hes has for his trans. he said that a shop did it for him and told him its an si trans but he says he has to slip the clutch at like 2,500rpm to take ouf or it stalls out with his new clutch and we i kid you not went 52 in 1st at stock redlind and 85ish in second WTF !! anyway the shop says that they gave him to right trans ( lol ) and because it works otherwise, they wont fix it or replace it i dont know what he has. your thoughts