I did this like 7 years ago. I can't find the receipt, and I dont want to pull it apart but I can if there's enough interested.
Its like a BM 0393 from polarbear inc (or something around there). I had to modify the clamp to accept the larger motor housing but it works. Much more powerful and 3 speeds (so you choose they two you want when you wire it in).
Don't order that P/N blindly without doing your own research, like I said I can't remember exactly and no receipt.
Dave
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