[Christ]

It wasn't really an efficiency discussion to begin with, I guess... it was more like me asking someone to help with a photochop.

As far as squaring up the rear columns, you just don't use bondo for that type of work. If you have to build it, bondo is not the correct material for the job. More likely would be to make a shaping section of foam, then fiberglass over it, and best option would be to actually bump hammer the whole section of sheet metal into the form that you need, then refine it with a peening hammer and dolly, then use some filler to "straighten" the lines. That's what I call major body work.

EDIT: None of this would be necessary, were I installing a Kamm extension. I still may, since I can make one quite simply, and it won't be anything wasted if the project takes a turn elsewhere.

What I'm actually considering doing here is not even close to any of that - it's cutting a few pieces of metal and riveting them together so that they match the original body lines.

The major body work doesn't come into play until I figure out if the final product will actually even have those rear pillars. It would be kind of pointless to play with them if they weren't going to be there, eh?