It helps when the power valves are working correctly. It is on the rich side and could make more power by leaning it out and giving it some timing advance.
I imagine you would have to swap the wiring harness over ‘cause the rz cdi controls the pv motor. Not worth the effort. Plus anything rz350 prices have gone thru the roof. There are plenty of banshee cylinder, porting, and carb combinations that you would more than happy with. I’ve got a beater rz350 and you would have pry it out of my dead cold hands!
Very true statement. Way back in the 90s this was done but RZ350 parts were all over the place and much cheaper. Banshee aftermarket cylinders are way better these days.