Porche engine? naw, that's a hangar engine, I had a porch engine oncet sat
on the porch for some time.  But folks I dunna think that 3.2 is a
waterboxer design so you'll trade your waterheating for whatever you can
find to substitute.  MSDS years ago did a similar conversion.  Called it the
Road Panzer.  Put that porch pup in a nice aircoolt 82 and woweee mikey it
do fly.  Hooking up the heat exchangers should be a peas of cake for those
handy with sheet metal.  You'd then have a spiffy 83 westy that will get out
of it's own way

p