Power tank just isn't an option for me. I have enough in the cab already, and am already having a hard time finding a good spot for the other pressure vessel I keep in there (fire extinguisher). I can also see me forgetting to refill and end up having to keep my old MV50 around just in case.
I REALLY like the idea of the york, but the fact I'd have to move everything around, coupled with the possibility of swapping engines soon, I don't know that it would work out.
Mike: Can't put a battery at the air box, snorkel and all. I have ABS (and like it) so that system will not be moved, same with cruise control. I have the emission components just ahead of where the Clutch master sits (if i were a manual), and Cali frowns on removing (or even moving) that stuff.