A/C evap drain install -non-A/C cab

[weq92f]

So, I've acquired my new 67 SWB Fleet side. The VAir system was installed about 5 years or so ago and was never used AFAIK. I'm assuming this really because the compressor had the wrong seal and would not hold vacuum. Not to mention, now that I fixed that, I have a new leak in my interior!

My problem now is that I need to make a drain hole somewhere for the evaporator condensate. VAir instructions say measure 1" down from the drain nipple on the Evaporator housing, drill a 3/8" hold in the firewall at that point and then put the hose through that with an elbow fitting.

What have you all done with your evap drain? Anybody know where the factory location would be for a factory A/C cab?

Thanks,

-weq