Well, I have the tranny out of the 1976 it is getting rebuilt (I work part time at a transmission shop) It is a 998 NOT A 904 AMC did not use the 904 in 1976 (look in the 1976 TSM if you don't believe me). I have the 1976 TSM,plus my friend at the shop also said it is a 998 also. I am still working on the 1972 also!!! Tom 72 GremlinX304 76 Gremlin 258 WITH A 998!