Thanks for your help.
I did get a chance to take a closer look at the Alternator, which is stamped with Delco Remy on the case and has a sticker with the numbers 43 07 102 21 and 20 039. Looking through the internet there are several remanufactured Delco Remy alternators with similar stickers and the 20 039 number, which appears to equate to versions of Delco Remy's 20039 12v units. As such, contrary to what I thought I recalled from when I bought the car it does appear that it has been at least partially converted from 6v to 12v. I hope to open up the fuse box tomorrow after work to see how that looks.
One concern that I have is in the past the dashboard light went out twice over a short period of time. I never though about it much because I was focused on other issues, and figure out it may be a short or something. However when I realized today that the car actually has a 12V battery in place of its original 6V unit I began to wonder if perhaps whoever did the change over may not have properly stepped down the voltage to the dash light. Which, if true, also has me concerned how they may have addressed electricity to other parts as well.
Below is a couple quick pictures of the alternator, as well as the starter, ignition coil and distributor. A couple of the pieces (though not all of them) look like they have likely been replaced from the original units, but I will have to take a closer look to confirm. Since I have never had any issues with the headlights, turn indicators, brake lights, or backup lights, I'm hopeful that electrical supply to these systems was addressed correctly.
Thanks again for your help.