So if someone wants to know what speedo drive to use when converting to an mechanical speedo meter.The answere is a speedo drive and cable from an Yamaha YZF 600 Thundercat.Yamaha 341-25846-00-00 341-25846-00-00 RETAINER,CLUTCHand Yamaha RD Speedometer Drive Washer, 341-25149-00-0
Its a perfect fit. just plug ad play.
Have a Nice day.