With the weekend coming up and summer approaching I was curious to put an on board water system on my Pig, I was wondering if anyone has done it yet to their FJ80. I plan on using a 8 gal tank where the spare tire would go under the vehicle and use a compressor to pressurize it. Got the idea from my brother who is a fire fighter and he built onboard water on his Heep. Wanted to know if anyone has done it yet?