If I can offer some advice on the conversion. You will want to use a longer pipe nipple than the one in the lustreking link. I think it's 1.5". Also, I would suggest using the white gasket on the coleman xtreme cooler rather than a red silicone ring. I have never had the red rings seal well on this brand of cooler. The white gasket on the coleman, however, works like a charm.
Good luck!