The Stovebolt Site Forums The Shop Area Driveline pulling my 6 to freshin up, thinking about trans swap, advice?

It's kind of scary what some people put together. What you have is a passenger car stick shift bellhousing of the same era as the engine with the original trans. It's not an auto trans bellhousing. The mounting holes are in a different location on the early vs late so they just made do. There are number of members here with early trucks with your combo or V-8's that should be able to assist you. It's going to take some work but will be worth it in the long run.
Fred