Try going to welding supply stores. They can give you a full fill.
The PowerTank unit comes with high end regulator, hose, oil filled gauge and quick connect air fitting. Not sure it justifies the price, but it is high quality.
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2009 H3T Alpha Luxuary, off-road package, RD Rock Bashers, SnugTop SlantBack, DOI Front Bumper, Warn XD9000 winch, Viking synthetic winch line, Hutchinson WA-0615 beadlock wheels, OMF Performance rock rings, Cooper STT 315/75R16, Thor Parts rear bumper, OEM UCP, Low profile rear shock mounts, Hunner front skids, Slide Masters Cargo Slide, RAD-1, Cobra 75, Midland 75-822, H3x square tube grille guard, hood louver, locking fuel door, mini-grille, 60" Hi-Lift Jack, CO2 PowerTank, T-bars cranked