Have you considered installing some "air mover" fans somewhere to help
circulate the cool air up to the front?  Seems to be a much easier
thing, if it would work, than installing a second AC unit.  I don't know
if you can plumb an extra evaporator into the stock system (my hunch
would be no); adding a second compressor and condensor would seem to me
to be well into the realm of "not practical".

Allan
--
1991 Vanagon GL

James Jean-Woo Kim <jkim.phd@GMAIL.COM> writes:

> I need your help. My 87 Westy has stock Rear-Air Conditioning, which is no
> good in the summer heat. (Last time we drove through the 100+ degrees areas
> in central California, my 2 kids were under the blanket freezing while wife
> and I were sweating like pigs.) A friend is offering his Behr front A/C unit
> on his 84.5 Westy. So my questions are:
>
> 1. Can I install this unit in tandem into my existing A/C system so that I
> could have decent cooling in the front as well as in the back this summer?
>
> 2. Does anyone have advice/instructions/pics based on actual experience, not
> speculation please?
>
> I searched the archives and suspect Ben T might be able to help.
>
> James
>