The roof insert in my coupe [32 Essex Terraplane] is the back 3/4 of a 59 chevy 4-dr roof. I've also used a 55 chevy wagon roof to make a deck-lid and fill the roof on a 31 Dodge coupe. The lower deck panel in my coupe was made from the very rear section of a 55 Pontiac 4-dr Ht roof, and the fire wall was made from the recess on a 58 ford deck lid. lots of good tin can be cut out of old cars and still be used, make a cardboard template of all the radius' you need and tear out to the junk yard!