My only suggestion would be to find a good, reputable shop to do the replace for you. I'm not from that part of the country so I can't recommend anyone except for maybe the Mariatzi brothers in Cambridge MA. They do a good radio show anyway.

__________________
83 W123 240D
76 300D, "Lil Yellow Car"
1978 Cessna 172N 180 HP Mod

"If life ain't fun, I'm not interested"

The important things are those that you learn after you know it all.
Chip Foose

Build a better mousetrap and you will REALLY infuriate corporate america.