Its not hard to fit it yourself. It need patience, plenty of time and a closed garage.
- with the top closed and the windows open, remove your back seat, parcel shelf, and empty your trunk.
- remove the rear glass: clean and lubricate the seal, make sure no points are sticking, remove the wires for the defroster, find a helper, and from the inside of the car gently push the glass out of it's seal, using as much surface area of your hand at a time as possible.
- remove the staples that hold the outer skin to the window frame with a screwdriver.
- remove the trim pieces / snap receptacles at the C pillars.
- from under the parcel shelf side panels, detach the headliner by bending the sharp tabs down and breaking the contact cement's adhesive grip.
- remove the 13mm bolt that holds on the mount for the gas shock on each side.
- using a 10mm wrench and a suitable back up wrench (a small "ignition wrench" worked for me) make the rear tension cable loose.
- carefully peel the outer skin from the rear perimeter of the car so as not to bend the cable or scratch your paint.
- remove the rear tension cable from the top carefully if you wish to save it for reuse.
- open the top partially such that the section that contacts the windshield points straight up.
- carefully remove the rubber window seals from their channels, minding the phillips screw at the A pillar on the front seals.
- find the phillips screws that hold on the seal mounting channels and remove them.
- drill out the rivet on each side that holds the vinyl strap from the top to the frame behind the roll bar.
- if applicable, drill out the rivets that hold on the outer skin at the bottom of the C pillar.
- remove the bar and side pieces that hold the outer skin to the frame where it contacts the windshield.
- remove the outer skin from the frame: it is glued at the C and A pillars and along the front bar with contact cement.
- remove the side tension cables from their receptacles at the A and C pillars.
- inspect your insulation pad and decide if you want to replace it. if the fabric on top has deteriorated, fix it.
- check, clean and lubricate the entire mechanism. fix rust spots on the body and top frame.
- install new side side tension cables into the new outer skin. if there are springs on your C pillars between the frame and the cable, the new cables should measure 94cm. if there are no springs, the new cables should measure 106cm. check the length as the dealer supplied cables i purchased were the wrong length. initially i purchased the 106cm cables, which actually measured 102 and 103mm long. i shortened them to 94cm as they were not returnable.
*the dealers' electronic parts catalogue, ETKA, has an error - it specifies the long cable for all cars up to mid 1993, whereas my 1987 and 1988 examples use the short cable. be sure to order the correct cable for your car.*
- close the top but don't close the latches, let it float a few cm open.
- drape the new skin over the frame and tuck the mechanism in the front "pocket" of the skin.
- align things as best you can.
- insert the rear tension cable's ends into the top and into the car. don't forget those fabric loops for the boot cover hooks, if applicable.