Am I right in thinking that the reverse switch location on the RB gearboxes comes out the side under the floor of the drivers side VS the LT77 gearboxes is facing out the rear?

Got a 300tdi but bolted to a LT77, so I'm guessing the reverse switch is not going to reach and will need to make up a wire to reach over?

I think the R380 reverse switch comes out the passenger side under the floor, and the lt77 is on the rear as you have stated.

The switches are also different with the R380 (at least mine) using an econoseal plug and the lt77 using spade connections. I have a lt77 but have just fitted a a 300tdi looms throughout. I just made up a small extension loom that also acted to convert the plugs, so had an econoseal plug on one end a length of wire to get to the back of the box, and then spades on the other.

Yeah i think mine is hidden somewhere!