Installation of a NMO mount in a Honda Element:
Removing the upper console. Pry out the 2 light covers, then use an 8mm nut driver to remove the bolts.
The A pillar trim pops off without any tools. The coax can be tied to the wire bundle behind the panel.
Lay a tape measure on the roof. Line up the end of the tape with the black edge of windshield. This could vary depending on your windshield. On mine I measured 9″ from this point for my 3/4″ hole, made with a step drill.
Here is a larsen 2/70 antenna installed. I am going to order something shorter that will clear the garage door.