I parted a number of MR2's and here is some of what I learned.
My numbers are from over 4 years ago.
Does your car have rear speaker grills in the C-pillars?
Early model and/or low option cars did not get speakers back there. The grills are molded into the curve of the interior plastic. There is no way to add aftermarket grills back there. The way to do it is to get the entire traingular rear-side-window trim out of a car that came with speakers. These trianlge trim pieces will retail for about $50 a pair.
Front speaker grills from the dashboard are popular.
I see you have a front strut brace.
Early models did not get them. Cheap easy upgrade that retails for about $45 on ebay
In the front trunk, the sunroof is designed to rest on the rubber pads of the strut brace. There is a clasp up forward that often goes bad. These are popular.
'87-'89 got different taillights than '85 and'86. Many people used to upgrade to the newer which is very easy but if doing this it requires that you also get the '87+ trunk lock cylinder as well since it is longer.
The pasanger side air vent was updated in '87 and the older car owners liked the look of the new version better. It is a perfect fit but it does require not only the fiberglass piece but the metal piece undernieth it as well.
Ashtrays, if you are lucky to still have a good one, are in demand as is the trim peice that surrounds the radio and HVAC controls.
Doors with crank windows are desireale since the switches and motors of electric windows were rather troublesome.
