I am guessing a stock 701 exhaust does not fit
Stock yamaha 701 pipe will not fit.
Almost all Kawi 650 stand up pipes will fit
The B-pipe will fit, but it will not fit with a Kawasaki Manifold. You have to use a Westcoast or similar 650 manifold due to the head pipe angle.
The SJ mod and limited chambers fit
The Kawi 750 limited chamber hit the gas tank but can be made to fit
The B1 mod chamber fits like the kawi 750 limited chamber
the B1 limited chamber fits, but likely needs dented or a different fuel tank
SXR chamber fits, but will need to be dented, or another tank.
The TNT chamber fits like the 750 limited and B1 mod.
No drypipes fit.
EDIT: THE FOLLOWING INFORMATION IS WHEN USING A KAWI 750 MOTOR AND OP IS USING A Yamaha 701 ----->>> The easiest solution (edit: for a kawi 750) is a bored out westcoast 650 manifold, B-pipe head pipe, SJ mod chamber. You can use a stock X2 waterbox but I personally am a believer in a SJ waterbox and moving the exhaust outlet to the right side.