I bought mine from VFN for my 70 Buick GS/Skylark body. The fit on my car is awesome and took very little to mount. I used aluminum plates inside the door to make it a bit more rigid and it worked well. The ones for my car were $564 plus shipping. Be aware they charge about 30-40 bucks crating fees and I believe they truck ship them only. I drove from Pa to Illinois and picked them up a year and a half ago for cheaper that shipping. Also,I believe their doors are a Lexan use only too.They list non post doors for your car $604.00 ans with post $624.00 a pair.
http://www.vfnfiberglass.com/site.htm