The frame is done! Well, mostly.
Even with as light as the frame is on our cars, flipping one over by yourself is kinda a pain. My engine hoist helps move a lot more than just engines!
To chop off the top tshirt, I first cut a line straight through the center and then did one side at a time
As I more or less knew from having inspected the metal from the inside when repairing the bottom, there was only one spot that needed fixing on the top, and even that spot wasn't bad at all. But no point in doing things half way.
Again, careful fitting of the patch piece makes for easy welding.
Next I primed everything with self etching primer and let it sit over night. The next day I went over it all with chassis black, and then let it sit for a day again.
Finally I drilled and then filed out to sufficient size the holes for the 4 bolt holes in the frame. Not the prettiest holes when i was done, but they'll work. I then welded the top tshirt on, primed it and let it sit over night.
Finally this morning, I went in and top coated the new Tshirt on the frame and all the areas around it where I sanded / ground / brushed / etc off the paint
Next up... dismantling the suspension from the old frame so I can clean it all, and rebuild it on the new frame with all the new bushings, springs, parts, etc!
I also, after a good bit of research, and reading up on custom car forums, placed an order for 3 Handi Foam II-22 kits, which should, I believe, be sufficient to 2 part closed cell urethane foam fill the cavities on both the chassis, and, once I get to them, the rocker panels / sills. This foam is the exact same foam that used to be sold by a different company (who just bought from FOMO and re-packaged it) as "AutoFoam" and which is still sold in much larger kits by FOMO for automotive purposes.