John,

Did you see this post?

V12 560SEC burnout Satish's car done

Satish finished the V12 install in his W126 SEC. I know it's a different chassis, but a lot of technical problems in the install probably apply to your project.

It might be worth a phone call for some general pointers.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".