You might want to contact Joe Tripp:
http://mbca.cartama.net/showthread.php?t=26066
He's the one who put the 606.962 into a W140. Actually, he's apparently done it twice. Once using old technology and once using a later gasser chassis and trying to tie the electronics in.
He's a nice and apparently very advanced tinkerer...I'm sure he'd be able to give you some tips that would save you some time and trouble. He's also got several engines just "laying around"
