Will a 04 gsxr 1000 motor fit on a 00 gsxr 750 frame?

While the 2004 GSX-R1000 engine is a more powerful and advanced unit compared to the 2000 GSX-R750 engine, it may physically fit in the frame with some modifications. However, significant adjustments to the mounting points, wiring harness, and possibly the exhaust system would likely be necessary for a proper installation. It's also important to consider the compatibility of the electronics and other components between the two models. Always consult with a professional mechanic or experienced builder for specific advice on such projects.