So here is my first prototype... It fits the door using the original screw holes. I added the 81-93 door handle to match the front. A new armrest will have to be made. I will add a grey insert to match the front and the bottom will have carpet installed like the front but without the grill.

What would you do with it at this point? I'm looking for any ideas to smooth it out. I'm still thinking that I should fiberglass the whole thing. Its been cut into four sections, lots of screw holes to fill...

Any ideas on how this should/could be finished off and look OEM??