Hey 59camino that shit looks good.To answer a few of you questions.Your viair's should have came with a external kit goes from intake of comp. to external fairlly seald filter.I read somewhere on here that mounting them upside down is not that good for them.Can't dissapate heat off of the head.I'd run 1/2" line and valves.You can always slow them down w/ restrictors going up and going down a just used a 1/2" end cap and drilled a 1/4" hole in it and it slowed it down alot.Make sure you use a water trap and put a shrader valve in somewhere on the tank.You never know what could happen w/ those comp. and leave you stuck on the ground.Hope this helps a little bit.Keep ansking question there are a lot of people on here that know there shit.