I talked with a radio guy a while back. They can rebuild the radio back to factory specs, with original style parts for authenticity. They can also tweak that same radio for better sound and reception. He told me they can also use newer style transistors in the radio for better reception, faster warmup and better sound.

I think I would purchase a modern stereo radio that fits in the dash that has AM/FM and maybe a CD player. You can find them in the truck vendors like LMC.