[SDJason]

I tried to keep mine as stock as possible, but there are a few things that have been modified:

- voltage regulator (one of the ones fitted inside a cutout, so it still visually looks the same - got tired of overcharging the battery & the resultant acid pouring out)

- battery disconnect switch (don't know how necessary it is, but it seems like a prudent safety measure)

- 3rd brakelight (the led one that looks like a thin black strip - pretty inconspicuous in the back window; once again a safety measure - folks nowadays are used to seeing a 3rd light - I don't feel like being the guinea pig to test their reflexes)

- fuses (the previous owner added a fuseblock when he installed turn signals, so I just kept it there)

- 5.5 head (once again - something the previous owner had done; I'm not about to go rip it out for the sake of stockness)

- electric fuel shutoff (another thing the previous owner had done, also something else I'm not going to remove, as it doesn't seem like it would be worth the trouble, and it is an extra safety measure, I guess)

- thermostat (I don't know how necessary this is, but after reading about the benefits of it, I figured it's easy enough to add, and it doesn't change the appearance at all)

- sealed beam headlights (yet again, something that was done long before I owned the car. I just don't have the $ to justify switching them back right now)

- cast iron brake drums (another thing the previous owner did, and I'm probably grateful for; from what I've read, it improves braking performance dramatically - since I have nothing to compare it to, I can't vouch for that, but will take everyone else's word at face value)

- aluminum two-bladed fan (done by a previous owner at some point. After reading the horror stories of what can happen with an original fan, I took a magnet to mine to check what was on there)

Edit: almost forgot - safety belts!! Those were actually the first thingI had installed

that's it off the top of my head...