Philip - I would suggest that you post your question as a new topic in the engine and driveline shop in addition to doing a thorough search of the 'Bolt pertaining to your question.
There are true experts here that can give you an answer to your question. While I understand what you want to accomplish my experience to the inline 6 is limited to just my old 216 and my current '57. Good luck and I'll be interested in seeing what the big guns have to say.
Don
