Kimo - there are guys that restore these old radios who charge between $275 - $400 depending on what you start with. At those prices for restoration - if you got more time than $ it pays to make sure you aren't buying junk.
Dials, knobs, speakers, grill surrounds, etc. are all repopped. Chevs of the 40's sells them as do several other vendors.
Post a note on the VCCA site if you need direct knowledgeable old chevy radio help. I have done 3 truck radios now and the help I got from a local VCCA member was invaluable.
Good luck!
