Thanks guys! Dad worked on smoothing down the welds a bit more today, and we stuck the passenger side door back on. It fits/opens/closes sooo much better than it used to.
Then it was on to the driverside. I took some measurements and started getting things out of the way (dimmer switch, dome light wiring, door, etc.).
The difficult part on this side will be locating everything correctly, as there isn't much left to reference off of. The upper floorpan/lower firewall is going to be a little complex to make, too.
We've got a swap meet to hit up next weekend, but hopefully I'll find some time to work on the truck as well. As always, I'll update this thread as we make progress.