William M wrote:

Actually I contacted a fellow who advertised a seaplane conversion on
Ebay for high wing twin engine aircraft. He then mailed me some
information. It was basically adding a hull to the bottom of the
fuselage and attaching a couple of sponsons on the wings.

I have pictures and a set plans of a Cessna 150 conversion so it's
possible… just not probable or practical I think.

Not a biggie, though they up the HP to 150, ie. 50% more than it had
before, but no gross weight increase like floats sometimes allow. The
added engine weight offsets the loss of the nosewheel and I believe they
move the battery to the aft end of the plane...

Now to find a pair of 12,000 amphib floats kicking around for less
than the price of a house. That would be neat.

Well there are/have been DC3's on floats, that would give you a couple
thousand pounds safety factor... G