To remove the quarter...
1. Remove the lower Aero Rocker by first popping out the 3 plates in your door sill. (2 small ones at the ends, large one in the middle.)
2. Using a punch, knock out the plastic rivets, there are 3 of them.
3. Using the same punch, knock out the 6 plastic rivets on the bottom of the rocker that hold it to the floor pan and the quarter panel.
4. Remove 2 screws, one in each wheelwell.
You now have to use a screwdriver to release the locking tabs that lock the rocker to the bottom of the aero molding on the front fender and rear quarter. Now you should be able to pull the rocker straight out toward you.
To Remove the quarter panel.
1. Remove the screw holding the back edge of the molding in the wheelwell.
2. Carefully pop the molding off of the rear clip. Using a small screwdriver try to release the front clip from the quarter panel.
3. Using a pair of sidecutters or long nose pliers, pull the "plug" that holds the molding on the inside of the doorjamb.
5. Remove the remaing screws that fasten the rear wheelwell inner fender liner to the quarter panel. Also remove the 2 screws that hold the intake grill, remove the grill and rubber grommet
6. Using your punch and hammer again, knock out the plastic rivets that were hidden behind the molding.
The quarter panel should now slide forward and off the car.
You are going to need plastic rivets and most likely replacement clips to put the trim back on, you can get them here; http://www.ardeldistributors.com/category.html?UCIDs=414669%7C656537
Get Extra Rivets!!!
I just finished a complete paint job on my 86 so I have VIVID memories of how it all comes apart and goes together!!
Glenn