I have a 55 Ford Fairlane 272 y-block 6 volt, will the value of my car be affected if i convert it to a 12 volt system?

I'm also a new owner, less than a year so I'm just learning.

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.