Here's the latest project. Working on a replacement part to fill this void and mount a RAM ball and a Mic holder. For those interested, I am printing on a modded Monoprice MakerSelect Plus and the pictured part is just in PLA. The final part will be printed in NinjaTek Armadillo since it is much stronger and less likely to warp in the hot car.
I'd mounted my mic to the factory plastic part, but it kept popping out on rough trails and ultimately cracked:
The void:
The first attempt for fit check:
It needs some tweaks but it fits pretty good for the first go. The mounting plan (Unless I think of something better) is to print a small rectangular bracket with a hex hole for a nut, and sandwich the factory dash (the black surround), with a bolt through the front.
I'm thinking that the Mic holder will kick out on the right, bit of a wing so that it is on the passenger side of the phone.
The RAM ball mount with a 1/4-20 solder nut, which as been working really well on the FZJ80 useless pocket filler I printed:
(ignore the gap on the top, that part needs some tweaking still)