Looks like the rear bumper is a later model , possibly 1950 Cadillac ? and the tail lights the almost “definned” the -48 Cadillac rear fenders , you continued to remove the last little peak , much like the -48-49 Olds 98 rear fenders , sweet !! So maybe we are waiting for someone to make a trad custom version of the Cadzilla ? I think that it was a icon of its era and needs to be appreciated for that , the eighties had a lot of billet , high-tech built in to all kinds of old cars , if a -48-49 Cadillac sedanette would have been built in the golden era of customs it would most likely use its stock top in the top chop , so …… Still I got inspired by Cadzilla when I built my -51 Merc early nineties , the clean lines and no vent window even if I wanted is to look like an older build . The Cadzilla was built with a clear focus on design first and less focus on practical matters which I like . Last year it was thirty years ago Cadzilla was built and we are still talking about it , a clear custom car icon . Is it possible you will show us your rendering picture your holding ?
Wolf