[MDTdriver]

This mybe to late for you to use but here it is.
I have had Wilson antennas for my Verizon cell phones starting in 1998.
1. on Bounder MH
2. GMC 1 ton
3. MDT now, I have found that CB L brackets work the best, mounted on cab/bed/mirror, I even used a Ham radio antenna brack once a little pricee!
Running thru the window (temporary) or thru door jam if you have enough rubber to make space for cable this works on my MDT very well, bracket is mounted to my mirror bars with small U-bolts.
Hope this gives you some thoughts for your install.

Larry & Kathy plus Meeko