Lull 644 TT-34 Highlander 2 telehandler that needs transmission work

I have and older Lull 644 TT-34 Highlander 2 telehandler, serial number JD1233LN (not sure what year the machine is) and the transmission needs to be re-built. I believe the transmission is a Funk series 4000 Long Drop but I would like to confirm this. Anyone have information on the raised letters on the transmission casting or other identifiable features that can confirm this before I split open the transmission? Related, I am seeking a shop or person that can rebuild the transmission. I am near Green Bay, Wisconsin. Call or text me at 715-863-1234