Parts needed for Bridgeport mechanical power feed

I have been going through my new to me 1963 Bridgeport J head mill. When looking at the mill before I purchased it I noticed that there were some parts missing on the mechanical power feed. This has the three phase motor with the quick change gear box to select the feed rate. What I'm missing is the handle for selecting the feed rate and the knob that selects high or low range. Internally I am missing the 27 tooth idler gear and the idler stud that attaches it to the gear shifting arm in the gear box. I am also missing one bearing and the bearing cover that goes on the bottom of the shaft on the bottom of the gear box. The motor works and there appears to no damage to the remainder of the gear box so I am not sure why these parts are missing and the previous owner didn't know either as it was that way when he bought it. If anyone has these parts or an entire gear box that they would be willing to sell I would be interested in it.

Thanks!