Nice - and the knee bar along is worth $30 - so you did very well!
Since this one already has the plug in harness, it would be very easy to by a double end cord (plug on one end, foot pedal on the other) and use that. I don't know if you can use it that way without disconnecting the knee controller. Have not tired that on any of mine . . .
BTW - everything looks original to me - that is the older style bobbin winder that was used on the early 66 and 99 machines.