[Goodysgotacuda]

I need this.

Is it worth springing the extra cash for a adjustable regulator or is the non-adjustable one just fine for airing up/setting beads?

Nope.

 

[Goodysgotacuda]

So I calculated out the cost of everything

125 for the tank
55 for the regulator
43 for a 30 foot hose
then if I wanted a mount, thats another 40-50

Total w/out mount=$223
Total w/ mount = $263

This is not including shipping

Poly sells this
http://www.polyperformance.com/shop/Poly-Performance-CO2-Kit-p-57.html

Complete kit, with mount, for less. Granted, it is only a 15lb tank, but nonetheless. Not trying to knock your write up, but it just seems it would be easier to place one order from poly and get everything you would need. No?

Anyone know of where one could source the needed parts for cheaper?

Their regulator is $40, a used 20# tank is somewhere around $50, a 25' hose is usually about $25. Mount? Highly debatable, anywhere from $15-$150..So if I went and did it, I'd be spending about $115 for another beverage tank setup..

Poly is basically selling the beverage tank setup; but with a new tank, where the OP is saying "save a lot" is when it's being compared to something like a Power Tank. Which you're basically paying for a nothing-special tank, but a high end regulator, hose and gauge. But many people don't need the high end stuff. IMO his write-up is spot on for what 75% of the co2 users actually need; and 15# to 20# tank is a pretty decent jump..

 

[Goodysgotacuda]

Would mounting this in place of my factory muffler be a bad idea?

If you off road, yes.

If you plan to use it there, yes. Co2 tank needs to be elevated at the valve to be used.