I thought I would update this with the actual status of the build.
At this point the car has been completely dismantled.
The subframe was removed, media blasted, smoothed, ground, holes welded up and powder coated. You can see the pictures of it in here. Note that there was NO bondo used on this subframe. A filling was done with a tig welder and then it was smoothed with a grinder. The Chilcotes did a bautiful job prepping this for powder coat.
The engine and T56 transmission were mocked up in the car with big block motor mounts and the ATS transmission crossmember. Everything bolted up perfectly but the tunnel did have to be modified to preserve the proper transmission geometry relative to the rear end.
The DSE mini tubs have now been installed. Tom Chilcote did a really clean job of this and even managed to add an extra 1/2" of width on each side in the process.
The DSE Quadralink pockets, cross member and Panhard bar bracket have been installed.
The trunk pan needed to be replaced and this is also done at this point.
Here is a picture of the subframe after it came back from powder coating...
and one more..