Moby935,
You should speak with Scott at SACC. He has air bag suspension for the Pantera all figured out:
https://www.saccrestorations.n...stable-front-shocks/
Suspension travel should be limited by the bump stops in your shock absorbers but go too low and the ball joints will do that when they hit their limit of angularity. At the rear that usually means the tapered hole in the upright gets destroyed. The Pantera already has relatively short suspension travel, so unless you want to be driving around on your bump stops all the time, you'll be looking at a completely redesigned suspension with relocated mounting points, etc. The Roadster Shop is the only place I know of that has done that. They do build a Pantera chassis but if you don't want to go that far, they'll build a custom suspension on the existing chassis. I seem to recall they use C6 Corvette uprights and spindles, etc. That's how they built the suspension on the Ring Brothers Pantera.