[Christ]

For sure. The bet to be hedged, so to speak, is in the expansion chamber. It can either expand, literally, or allow "air space" to be compressed, sort of as a holding tank. It shouldn't need any help to flow the fluid back into the shock, because as the shock rebounds, there will be a pressure differential between the reservoir and the shock, which allows the fluid to flow back through, into the shock.

I'm going to start with air shocks, though. Easier to keep air in check, I think. If air works, out pretty good, I'll probably move up to a light liquid fluid that won't damage rubber (air shocks are rubber bladders inside metal casings). Good thing a set of air shocks are only $70 or so.

I don't think the tubing that comes with them is sufficient, though... it's only like 1/8". Might have to do something about that, like drilling out the inlet of the shock to accept 1/4" tubing. We'll try 1/8" first though....

No, we'll get the darned truck on the road, first. LOL.