I'm considering the following if any of you think it would be a good match for the 6/1.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220544933307&ssPageName=ADME:X:RTQ:US:1123
I asked the seller the dimensions, and he/she replied:
The length is 21" with a 2" exhaughst, the height is 9" and 9" across. the opening for the exhaust connection opening is 1 1/4"
I think the seller just called it the wrong thing.
They did indicate to another buyer that it has water in/out. So I believe it is just a heat exchanger.
If it goes cheap enough, it might make for an interesting experiment.
New these units sell for around $750!!!