Interesting. You obviously know the difference between ABS and fiberglass (not a SeaBird), so my curiosity has grown as to what it is exactly you have! Did Lanier give you any indication that they had produced the plane, or is it not a Lanier afterall?

I think I recall seeing a plane that was VERY similar to a Mariner, and I believe it had a fiber fuse. I saw it for sale on Ebay - a 'kit' that was long out of production. I'll see if I can brush away the cobbwebs and come up with the name...something is telling me 'Kingfisher' or something similar.

Steve