I did have to make a few adjustments to the GPS holder. I’ve used the DMD AMPS Base.

But because the holes of the GPS holder do not correspond 100% to the holes of the AMPS Base.
I had to drill the holes bigger in the holder, and remove a piece from the holder, so that the bolts came up to the holder.

But as a mechanic, this was not much work, and quickly solved. great product the T865 and DMD2