I had the same interaction when calling VA. They were more interested in selling me 2 units, one for the front and one for the back then to help me tie in the rear a/c. I reached out to RestoMod Air and they were very helpful. They even have the T fittings needed to tie the two systems together. I just received the kit but haven't installed it yet. Will let you know how it works once I do but definitely give them a call.