thanks for the kitfox story . I'm not the original builder of my plane but i did complete putting the kit together and first flew her . it appears that she is a III/IV 1050 with mods to up the g/w to 1250 . the first owner went to great lengths in his builders log to describe the mods that he made to increase the g/w . the tube that goes between the lower strut attach fittings was opened up and a solid rod installed in the tube to connect the attach fittings . the lift strut diameter was also increased . it was evident that the first owner had intentions of installing floats . other than what info that i have about the mods in the builder log , there isn't much out there about the g/w increase or who came up with them .