Speaking of the dash, I just tried a little trick and it worked well. I have a 84 Bronco II also. In 84 they still had the old style radio with the knobs. My old radio didn't work correctly, I wanted a more modern radio anyway. I thought I would just take the 86 ranger cluster piece and put it in the 84, since they looked the same except the 86 had the large hole for the more modern style radios. Would not fit. They changed the warning/emissions light area between the two large gauge pods.
I got to looking at it, holding the plastic piece on was 8 screws top and bottom. In the middle of these screw positions was a black partition in the silver part of the plastic. Same with the 86. So what I did was held my breath and took both cluster bezels to a bandsaw and cut both right down this black divider area. So now I have 4 dash pieces. I took the 84 left piece and bolted it back in around the speedo with 4 screws, and then I took the right piece from the 86 ranger that had the modern radio hole and the HVAC control area in it and used 4 screws to bolt it in on the right. It worked great. You can't even tell where I cut the dash in two, except if you look close you will see a parting line on the very top and the very bottom where there is a continuous chrome stripe around the OD of the pieces. I then was able to install a modern radio, and I think it was easier and the factory modern radio hole is much cleaner looking that I could have done by hand.