...I have the ERTL 2 door caprice Petty kit. It looks good all the way around excpet the roof is a little goofy high in the windshield area. It could use a slanted roof chop to make it look a little more normal, excpet that it is diecast and I aint going there ! It would be a good starting point if you can find one. I may make mine available , later, once I find all the stuff for it !
I think the resin was cast off of it and improved, but its been years since I layed hands on one.