I've mentioned in my post before that I am not a mechanic, I demostrated that real well yesterday as I was changing the speedo cable out on my 55, I wrung the clamp down screw off on the bracket that holds the speedo cable into the transmission housing, rut roo?

What should I do, have a pro fix it and what tools are required?

Claim to fame is the car was used as an extra in the movie Diner with Micky Rourke, Steve Gootenburg, Paul Riser and Kevin Bacon.