I have the comp engineering in my 87, I ordered the optional rear bars that pass threw the rear package tray, also had to bend the front down bars to clear the arm rests and concert sound door speakers. I have an auto repair shop with an exhaust bender, so that really helped! make sure you gut the interior before you begin, and what ever you do, DO NOT USED CARDBOARD TO PROTECT YOUR DASH WHILE WELDING!
makes a bigger fire than desired!