On Tuesday, September 4, 2012 4:32:45 AM UTC-7, Sparkey wrote:

I just got this original 1971 Chrysler radio but it has distorted audio.

Turns out that one of the 2 output transistors is shorted.

If the (working) one is not a Darlington, it's probably a complementary
pair (one NPN, one PNP); modern equivalent-or-better would be MJE243 and MJE253;
replace both and you can be assured the pair is truly complementary.

It's unlikely the 1971 transistor was of any type currently produced.