When you go to add a backup camera this is a link to show which pin to use . Back-up Light signal source in cab for reverse lights and cameras - https://risingsun4x4club.org/xf/threads/back-up-light-signal-source-in-cab-for-reverse-lights-and-cameras.21200/
When you get to the radio . I installed new speakers that fit under the stock grill . Polk audio has front and rear speakers the fit in the space and in the back they fit in the plastic case . Here are a few links . scroll down till you see my name and a photo of the black practice...
The gears were all wore out on mike so I drilled holes all the way through and add stainless steal wire so the metal bar could grab it better . I used some resin in the holes to hold them in place .
The black part that goes around the shifter has the wood grain under black . If you like the wood grain you can wipe off the black paint with brush cleaner . Here are a few photo . Also there are little plastic screws that hold the gear bar in place . when the plastic screw come loose...