I'd certainly hate to have non-stock parts on my rig
! I have the room to locate a 3-5 gallon tank right at each wheel should I choose to do so. I find it hilarious that so many people feel like they know what I am limited to as far as size of tank. More than likely based on preliminary thinking it will be a 12-15 gallon aluminum tank(s) fed by one or possibly two Viair 450 compressors and set to hold at about 145PSI. Cost isn't a huge factor, you could say I have friends in the biz. Size constraints rule out certain options, I'd love to have an engine driven setup but it's just not gonna fit or needed. Co2 would be an excellent choice but I can put together my planned system cheaper than most Co2 setups(once again, friends in the biz).