ZXR250 EXHAUST

Hi All,
Recently got myself a zxr250 1990 model and wanting to put on a exhuast,
mate is giving me one a new yoshi R55 from a gsxr 600, its not a slip on and will need welding etc to fit ....
Will putting this exhaust from a 600 to a 250 casue any issues? eg loss of power....
any ideas??
Thanks
Recently got myself a zxr250 1990 model and wanting to put on a exhuast,
mate is giving me one a new yoshi R55 from a gsxr 600, its not a slip on and will need welding etc to fit ....
Will putting this exhaust from a 600 to a 250 casue any issues? eg loss of power....
any ideas??
Thanks