Accuair Endo VT45 w/dual compressors?

[sgaylord]

Ive tried multiple places but cant seem to find what I am looking for. I have the Endo VT45 BRA 5 gal tank and 2 Viair 440c compressors. Im a bit of a nube when it comes to bagging so bare with me, lol. How do I connect the two compressors to the VT tank? There is only 1, 1/2" NPT fitting and only on one end of the tank. I would assume for dual compressors there would be more than one fitting... There are other 1/8" NPT's but I figured those are for additional sensors or gauges if you wanted to add them.