Sweet Tim!! Did you already have a tig welder....or was this just a convenient excuse to get one??? 
If you know, I'd be interested to hear what kinda setup you are gonna have going on, i.e. tanks, machines, etc.
....And what kind of weight can you pull/STOP with that NPR/4cyl?? Very cool.....and SOFTWASHING is still the best pw biz name I've heard of!
The bed will have 3-200gal tanks, 5 reels, 8.5 cold pw, application pumps, an additional washdown pump (10.6 @ 580), generator, 4 ladders, 2 surface cleaners..... I'm not sure what it's actual capabilities are, I have rode around with 400 gal of water to test it and it wasn't to worried about that weight. I will only ride with maybe 250gal of chem/water on average. The truck is geared pretty low so it pulls very well, stops real nice also. I just hit 28k on it I think.