99% positive the chassis is exactly the same. The bike would be superbike only though since that is a different generation of motor. Between the two the subframe, wheels and rotors, the bodywork, some motor stuff, and electronics are different. But almost all of it will swap as complete assemblies as far as I know
Yep, just make sure you the 750, ecu, harness, speedo, air box, etc. Checkout the gixxer board if I recall theres a really good write up.