I've seen Manfred at Rheinland Motors for my 1984 300TD and he's been great. Very clean shop and honest work. He's not inexpensive, but he's very throrough and knowledable. Also, his assistant Ming is great, too. (Tell him Tom, with the W123 wagon sent you!)

His info:

RHEINLAND MOTORS
27-09 40th Avenue
Long Island City, NY 11101

Tel.: (718) 786-5232
Fax: (718) 392-5680
2 blocks north of the Queensboro Plaza station

FROM MANHATTAN VIA MIDTOWN TUNNEL: After the toll booth, stay on the right lane and take the first exit, Long Island City. Stay on 21st Street until you pass underneath the Queensborough (59th Street) Bridge. Three blocks after the bridge, turn right onto 39th Avenue. Then turn right onto 28th Street. After one block, turn right onto 40th Avenue. You will find the sign, RHEINLAND MOTORS, on your right. Our address is: 27-09 40th Avenue.