Work has begun. I just finished what is basically re-engineering the front portion of the stock TVPs. It took so long because each hole had to be carefully measured, and this chassis doesn't allow for easy measuring. Anyways, here's a pic:

The upper-right hole is to hold in a support that will connect to the top of the bellcrank posts. I'm ditching the radio box.
I have the holes done for the rear where the TVPs will connect to the bulkhead, but that's it for now.