Hey Joe, Welcome aboard-you'll love this site. One of your best bets is going to be to run a search on this site and view past threads on converting, it's been discussed time and time again, and some of these grumpy old guys prefer to only share the wisdom once... :p
I did the same, and made my decision based off a bunch of info I wound up reading. I personally went 12 volt with an internally regulated alternator, it was an easy choice. Takes you out of the dark ages... bright headlights, happy starter, ect. Depends how crazy stock you want to keep it.
One thing I've heard of is taking out the generator, and having the inside rewound into 12 volt, keeps the complete stock look, but with all the advantages of the higher voltages. There's a ton of info on this site, have fun and keep us all in tune to how things go! Dan
