Hi Luke,  There are two types of "Standard" (brand) wind motors.
The first folds down out of the way for tuning and has brackets
of cast iron machined and lightly nickel-plated.  The second type
is more easily removable and has brackets formed from sheet steel
and coated in black lacquer.

I would recommend that you keep your piano as original as possible.
My suggestion is that you rebuild the motor you have, but be
forewarned: rebuilding a wind motor to run evenly requires more
skill than any other pneumatic restoration procedure.

I gather that you are a young person just getting started in the
hobby.  Doing a job like this right usually requires experience.
Don't be too disappointed the first time around and give up.  With
a little experience under your belt, it may take a second rebuild
to get a really satisfying outcome.

I would be happy to supply, free of charge, the materials you need.

Best wishes,

Jeff Wood