The drive side Sugino GT crank arm on my '84 Fuji Sundance has stripped pedal threads. I recently got the bike and while cleaning and lubing it, noticed that the threads looked a little buggered up. The threads let go on my way home today and the pedal fell off. Is my only option to get another crank arm? I don't know if bike shops tap these things out and put in some type of threaded insert and, if they do, if it would be more expensive than just replacing the crank arm. I really like the look of the Sugino GT cranks and would like to retain them if possible.

Thanks for any advice.