bams12

I am about to start reassembling the interior for my '80 Corvette. Should I put the top and bottom fiberglass shells together with the side hinges first , then the leather and foam pieces on? Or should I put the leather covered foams back on the individual bottoms and backs , then put the two halves back together with the side hinges? Maybe it is not even possible to put the hinges on after the leather and seat foam are assembled. Any and all advise is appreciated. Thanx Brent