Long story short: owned a few Cadillacs but, always wanted a convertible did some detective work and came across decent builder down in Houston
Removed the interior remains and top frame (surprisingly in great condition) extended through full range without any problems also removed dash, heater core, blower motor, windshield, core support, fenders, and grille
Once I get it to the new shop space this weekend the engine, transmission, and driveshaft will be pulled out