welcome aboard.
what is wrong with the flywheel you have?
Are the internal magnets missing, broken, flywheel was stolen ?
Happy Boating
Depending on serial number, the flywheel is still available new:
FP5506 / # 91569~ 361060910M FLYWHEEL CUP-FP5506 $532.13
I don't know whether it would work on serials below 91569. That is MSRP; Any dealer would discount it. Even me.