There are quite a lot of these Honda Mosfet Reg/Recs on eBay. A common price is sub-£25. They would need a connection mod, but doable with female spade connectors. Here is the cheapest. https://ebay.us/m/xOzyZ8
I bought that for £16. Although it's not a MOSFET Reg/Rec as it's the SH type which is the Thyristor/SCR Shunt type. FH denotes MOSFET technology but it's still a shunt type
Could be a FH020AA which is mosfet technology. Mosfets shunt but run cooler. The best are series Reg/Recs.
Pretty much any single phase or 3 phase alternator. You may have to adapt the wiring but it's simple. Connect your 2 or 3 yellow wires to the plug with 3 contacts. Any way round is good. Then connect your battery to the other plug, one being positive and one negative.
For bikes with two wires out of the stator then just connect the wires to any of the 3 pins on the Reg/Rec.
