The gun rack does not fit, looks like it was from a 91 Crown vic. Oh well.
Bought the 85 5.0 coupe parts car that NHP Mustang had listed. Bright trim is perfect, side moldings are perfect, windows are perfect, rear bumper, dash face trim, springs, seat frames, weather stripping, trunk lid, etc, all needed things for my car
I have found more evidence of how my car was equipped too!!!!
Looking at my dash pad, I can see slight indentations and rub marks from brackets being mounted to the dash pad mounting points. I believe 82, 84, and 85 (possibly 86 too) were all equipped similarly. I have some pictures of pictures of an 82's inside and trunk, and the 85 Beale test car posters my dad got are big enough to distinguish some details.
Looks like on my car there was a support bracket for the gun rack on the passenger side that attached to the dash pad screw point closest to the center above the passenger side dash face. The mic bracket attached to another bracket that came off of the nearest screw point to the center on the drivers side. Off of the beale poster, I can see that the note pad is not attached to the gun rack like the aero mustang racks, it is more above the vent next to the HVAC controls.
On my dash pad, I can see that another bracket was mounted to the screw hole second closest to the center of the dash. From what I think, the note pad was attached to a cross bar that mounted to the one screw hole bracket and the bracket for the mic bar.
I've given up trying to find an original rack, so I'll just have to modify one my dad has.
In my trunk (I've talked about this before but I don't remember where), there are two "mystery" holes to the right of the center radio board support. Looking at the 82 trunk photo I can see what the two holes were for. My car had the older Micor radio tray setup(I can see the same holes in Rich's car from his fotki pics). The other day I just happened to come across the radio junction box that allows for the repeater in some of my dads stuff!

Already have an older MVR-16 repeater, just need the massive radio tray.
Does anyone know where the wig wag module was located? Would it have been the street sweeper? I only found one non-factory screw hole on the drivers side inner fender, back close to the firewall (also near wiring that was spliced together.
Time for some pics now
I plan on having the pulleys redone, media blast the aluminum parts, still pull the motor, strip it down to the block(replace all the seals, make sure everything else is ok), repaint the entire engine bay, etc
Still need to buy NOS seat material
Got a good hood for it
Second place wiring was tapped into, down by the frame rail
Single screw hole
Passenger side
Drivers side
Gun rack screw holes
And an old pic