Unless you are going to "show" your car in an originality-based (such as MBCA) Concours d'Elegance, as opposed to most shows or those with so-called "French rules", you will be better off with a modern sealed battery, a gel-type.
The most well known is Optima of course, and the most expensive. I have a DieHard. I believe it is Group 34R, with the terminals reversed.
I still have my MB battery for shows, but every year no matter what I did, it was leaking acid, corroding things inside, and underside. It required annual maintenance too. The sealed batteries are "install and forget".