I was looking at the Viair 450Cs off ebay for around $200 but wound up with a C02 tank instead. figure out how much space you have to work with under the hood and get the largest one you can stuff in there. for me it was the 450c. Viair's site has all the specs for you.SteveO said:
http://www.norcalttora.com/~chris/mods/CO2 tank,bracket/