In these pic, the only major(ish) work needed was to undo a modification I had made when I built Vortex originally. The pf of Vortex was about 1 inch longer than a standard pf, so I had moved the rear cross panel below where the backbox bolts on back by that amount to accommodate the longer pf.

In the 1st pic I’ve removed the old plywood, you can see where I had cut the plywood where the backbox sits in order to move the vertical panel back.

2nd and 3rd pic show it being reconstrusted and finished respectively.