It was Kermit's even back when this photo was taken around 1988 or 89. It has been at the EAA in Oshkosh for a long time now, went there as flyable but alas, she no longer is so.
Some kind of Fiat. On an expanded view I can read Fiat along the rear part of the fuselage. Under that it say MM and then I lose it in the darker coloured camo.
Sorry, that is the best I can do. Pic was taken at OshKosh in 1996 and I have never seen it since.