Suzuki 2 Strokes

According to Omar, his rearseats designed for a GT750 will fit on a GT550, but he doesn't know if they'll fit a GT380. I thought the 550 and 380 were the same size dimensionally, I could be wrong though. Anyone know if the rearsets should fit a 380? Since I don't know how to weld, I'd really like to find a rearset that'll fit without much need for modification.

Someone on this board had designed a set of rear sets for his GT550 which I seem to recall could work on a 380 - I think it was Durgam