Suzuki 2 Strokes

Hi, I have a 73 GT550K But it has a master cylinder from the later model with the see through container.

I would like to put it back to orignal & I have seen a 73 GT250 master cylinder & it looks like it would work

Any ideas?

Thanks

They are identical. The big crossover books shows that the K model 250, 380 and 550 all use the same master cylinder.