Weaver_Drafting

So I'm a new comer to this site, so bear with me if this question has already been asked. A family member has a 1940 Buick that he is trying to restore (very slowly with very limited funds). He has asked me to look at his Sonomatic Radio to see if I could 'make her sing again'. How complicated of an exercise is this going to be?? I've worked on other 'old vintage radios' before (Wood Cased and BakeliteTube Radios from the 1940-50s), but never had the occasion to open up an old car radio. What are the 'land mines' that I need to look out for. I haven't been able to physically get my hands on the radio yet - have to wait for Thanksgiving Dinner with the Family - then I'll be in town to examine and collect the radio. Any advise or suggestions would be greatly appreciated. Thanks!!