80/81 kz750 motor will it fit gpz550

Iam wondering if?? A kz750 80/81 will fit into 1981 gpz550 frame has anyone done this ?? Im thinking from years ago that the blocks are the same?? but not sure.?thanks
rzguy85:evil:

Post edited by: rzguy85, at: 2007/06/27 21:36