I am rebuilding a 2 seat, circa 1980 gyro that I bought without an engine. I have built a mazda 13b engine that will, I hope, replace that O320 that was originally on the gyro.

I am not sure if the addition of the engine, PSRU and prop and the replacement of the the gyro blades will constitute 51% of the "rebuild" so I am asking

"will this gyro, when complete and inspected by a DAR ever be able to get it's N number"?

Appreciate any and all opinions.
MaxAirspace