I understand the 77 also had different porting. The reed block is different. I have the opposite setup. I bought a 77 that has a 76 cylinder and intake. The airbox to carb boot won't fit up. They changed to monoshock in 77. Different airbox. Also 4 petal reeds instead of 3. Let me know if you make the airbox thing work. I'm thinking of trying the 76 boot and trim to fit. The carb slide cutaway and needle jet are different too, BTW.
Tom |