fifesjeep Didn't the J-series also have T-177's and T-178's around that time frame?... Some matched to a Dana 20? The T-176 was used in CJs from 1980-1986 and other Jeep trucks from 1980-1987. The T-177 and T-178 were not used in CJs, only in other Jeep trucks. Transmission 1st 2nd 3rd 4th 5thRev T-176 3.52 2.27 1.46 1.00 3.52 T-177 3.82 2.29 1.46 1.00 3.82 T-178 3.00 2.08 1.47 1.00 3.01