I recently had to rebuild the Lucas Windshield Wiper Motor for my 330 GTS. It's not nearly as easy to find a repair shop for wiper motors as it is to locate a Lucas Alternator repair shop. Through the recommendation of a friend I hit on a good find:
Asom Electric
1204 McClellan Dr.
Los Angeles, CA 90025
(310) 820-3720
They rebuilt it in one day, and they'll ship it. Easy to do everything by mail/UPS and the phone.
The cost of the rebuild was $145 with one yr. warranty! The shop looks like it does alternators also.
Jim