Slow progress. Close to finishing up the rear suspension. I keep finding things I need to clean and paint. But it is getting there.
I suppose its time for the big reveal. Based on Cary's sugggestion, I am going with an external shock. Not sure I can get away with it, but its easily reversable. It was surprisingly easy to do. I used adjustable shock brackets from AA Manufacturing with a some angle iron for strength. Even easier in the front to connect to tubing. I used 1/2 threaded rod with rod ends to mock it up. I 3d printed a shock body to make sure there was clearance. I took a set of cheap Toyota MR2 struts and drilled a little hole in the bottom to drain out the oil. They are loaded in the strut tubes just for keeping geometry, no friction. The only tricky part is the motion ratio is different than the strut.
Right now I am thinking Penske 7500's for the shock. They are reasonably priced, come custom valved to my parameters, have multiple lengths, and are double adjustable.