Anybody heard of Equip Aire? Like Cool Pack?

['63GENIII]

In an attempt to keep cool this summer, I've been looking for a Cool Pack underdash ac unit to put into the '63. All that I'm really looking for is a somewhat period correct underdash unit like the Coolpack that I just missed on C.L. for $150. Then just yesterday I found an Equip Aire unit out of a '63 Impala that comes with the condensor, evap, pump (although I'm gonna run a newer Delphi pump) and dryer for 250. I was wondering if anyone here has ever heard of Equip Aire and if so, how does it compare to a Cool pack unit? Also do the underdash units do well in general or is it a waste of time? I really don't have the scratch to drop on a vintage air unit but this thing gets pretty hot (as I'm sure you all know) in the summer and I'm thinking I like the knee freezer idea. Any thoughts or opinions are welcome (about the ac that is!) Thanks, Chris