Wow! Sounds like a good one!
Why not just get something up to date for now at a car audio shop? Ask them to leave enough of the old stuff in place to backfit an OEM if you want a Hangar Queen later...
Me, I'd be looking forward to getting it dirty, maybe some pinstripes by brush on some dispersed camping...
Good job on the rubber, especially steering and suspension.
I bot a repainted, bored out K5 once in my middle age crisis phase and it sure was purty, but wandered and wobbled enough it was practically a death trap going down Mex1 at night with loco speed snorting truck drivers with huge welded cattle catchers on front for the black range cattle that slept on the road at times.
The reason they put the left tirn signals on was so they could pass within inches of one another concentrating on the blinker while blinded by hella spot lights,
without going off the edge of the two lanr road-on the other side that often had no shoulder...just a 6-18" drop off the crumbly asphalt onto sand or nothing...
Used up at least a couple of my nine lives driving at nite down there...
uff da!
Campfire stories...