'88+ have different rear ends. I honestly don't think that it will work on pre '88 E30's. Do some research and start e-mailling everyone that carry any kind of body kit for the E30.
Randy(empowerd), Kevin(straight_6), and I (Dave aka:'88 325e) started up Bimmercruize '01. Bimmercruize '02 is on Sunday August 11th! So if you need details about the show please contact us!