Hey guys, i need to know if the 88/89 dx/si trannys were the 20 spline or 21?, i thought the 88/89 dx/si transmission was 20 spline and the 90/91 dx/si transmission was 21 spline?, am i correct or is it the other way around. I need to know before i go out searchin tommorow because i got a bud that needs a 20 spline and he got like 2 or 3 different 21 spline trannys already that din't fit on his Zc, thanks.