I found the how to do it in the tech tips, and I've found a lot of threads of people chasing down all the related upgrades they find it requires, but I'm not really seeing anything on the why?
The obvious is that we live in a 12v automotive world, so making the change will result in an easier time finding batteries and such, but on a day to day use is there an actual noticeable difference between driving a 6 volt and 12 volt truck?
The advantages to availability of some parts seems like it might be offset by not having the ability to use stock equipment, making every future replacement require checking compatibility from a later 12v vehicle parts.
Would really like to hear from those who have done it, or have actively decided against doing it. I am particularly interested in hearing from those those who are maintaining a mostly stock truck appearance.
If I were to do it, it makes sense to me to get in and do it while I'm bringing the truck back to life, not get it running then tear it apart again.
Everything you said is correct. Your analysis is spot on. You asked Why and you answered your own question. If you have read the Tech Tip section on here re 12V conversion you will see that some "stock equipment" is used with voltage reducers and some equipment is changed to 12V. (chasing it down is a matter of ordering online or FLAPS, I believe the Part No.'s are given in the tip). You will know in the future what to buy because you did the conversion and there is not allot to remember. Seems simple because it is. If you decide to do it or not do it, you will join hundreds of people, either way, who are satisfied. In my opinion, if you are not a purist, converting to 12V makes sense for parts availability especially out on the road. Many folks have other reasons, like swapping in a V8.
It does not change the appearance much. Depends on your definition of appearance. We live in a 12V world with alternators cranking suitable amps. All the swap parts are cheap.