65 Dart Wagon Conversion to a Sedan Delivery

Looking back on the rust issues, it was the driver and passenger front floors, the passenger rear floor, passenger A Pillar, both rear lower quarter panels and both lower rear front fenders - luckily there are repair panels for these commonly rusted areas! Unfortunately no repair panel for this last but of rust damage! The other stuff - swap to an AC firewall and 2 door sedan delivery conversion is all because that was my vision from the start!
Really lookinf forward to see it in person. What a great build. Any decisions on engine, slant or V8?