and also the 89's didnt have rear disks, 90 si's were the first year and some 90's still didnt have rear disks. secondly the duel tipped factory exhaust, third the sunroof, 4th rear sway bar, 5th 14" alloys, 6th the mutli-port fuel injection system on the d16a6 as opposed to the duel point d15b1 and 2's, 7th tach on the instrument cluster, 8th the charcole recardo interior, 9th the si badges and make sure its 5 speed, si's always came 5 speed.