Best price on VA or OA

[GreyHoundSteve]

Well it seems that its a split between Vintage air and Old air. Im in DFW and have read EVERY thread on this board regarding both systems and its seems there about even. I have seen a few more complaints about OA but nothing too alarming.
I have a 67 with factory air duct holes but almost all of my ac unit is shot and in need of replacement so ive decided to go ahead and get a complete set up for my truck instead and had a few questions.

The first question why is the syatem with the VA vents almost $100 cheaper than the one with the factory vents?

Does anyone have any pictures of the VA vents?

The big question is ..... Who has the best price on these systems?

Ive decided that i will go with whichever system has the best price but looking around it seems that they are about $950 no matter which one or where i look, Does anyone know the BEST PLACE TO GET ONE (cheapest price)?