I do not have either engine.

The FPE 3.2 is almost identical to the Fox 3.2 engine. I DO have a Fox 3.2

My friend has the FPE 3.2 and I have the Fox 3.2 I would bet money that they use the same exact cylinder/piston assembly. If you took the cylinders off and put them side by side on the table--I can't see a difference.

My point is--I'll bet the Fox 3.2 runs about the same as the FPE 3.2 They are both Sachs cylinders--based off industrial chainsaw engines.

My Fox 3.2 turns an NX 22-8 at 7300RPM at 5000' elevation.

Never seen a Fuji 64.