Most of the time 4 cylinders had AX4/AX5 5spd 1987-2002 22.5" long, 6 cylinders had a BA10/5 5spd1987-1989 Peugeot 24" long. These lengths are trans only, not the bell housing or the transfer case. The AX15 was 1989 to 1999 Wrangler and Cherokee w/6 cylinder. Hope this helps.