Great information. The guy I got the Engine and Trans from said its a medium shaft. Not sure. I have been overseas for 6 months and have 6 more to go. My brother in law went and talked to him and picked it up for me. Don't plan on taking it to the track. Building it for a sweet street ride. I have had the car since 2008 and have rebuilt the 326 twice. I have always wanted to build a 400 for it but money was tight. I just retired from the Air Force and tool a contract job overseas so I can afford to build something at this time. I was thinking it will be about $6000 for what I want to do. If I don't do it now then I won't be able to. (Better half) lol
I will keep researching a perfect combo since I have time. Doesn't need to be way over the top but since I have the money right now I just want to do it right and not regret it later.