Wish I could say I've had a change to use the 40 lb pressure type I got from HF, but haven't yet.
I HAVE built a 2'x2'x4' blast cabinet that I have used to clean up parts and some Western Cyclone II wheels with though.
Once I have thecar on jackstands I'll be removing suspension, (engine, trans, driveshaft and gas tank already out) then putting it on a rotisserie. Anything that won't fit in the cabinet will be blasted with the pressure pot.
Sorry I haven't had the chancd to try it out yet....