ZX7 Yoshi pipe on a 94 ZXR750 HELP

Both have a 3 bolt patern has anyone fitted a ZX7 pipe on a ZXR 750 94
without any modifications to the pipe or flange ?

Has the exhaust got a join in the middle? If so, the local exhaust shop should be able to whip you up a midpipe and flange to suit for $50 or less (in the case of it being a straight-up fitment, which in Kawasaki machines is fairly likely).