Piece #13 is alternatively known as a wishbone, and it can be attached to either the top of the pumpkin or underneath it. Either can be made to work in various circumstances, but the lack of intermediate attachment points works against it. You have a choice between about a 6" rear roll center height and an 18" one with nothing in between. Can't go much lower than 6, don't want to go higher than 18. So yes, it's do-able. Just not very "tuneable".
It's been done in cars before - IIRC, it was Alfa-Romeo that used the upper mounting, and Lotus and at least one Camaro(?) race car have used the lower.
Norm
I run a stock 442 that hooks up fine. I see this as a cheap replacement for a watts link.
I saw an off road unit that looked good ...
I be running in stock configuration. I wonder if I could run something to complement the stock control arms ...