Thanks for all the advice! I have a pretty good relationship with my local Toyota parts counter guy, so I'll dig in with him, but plan on using a locksmith if he comes back with a negative. You're saying this TR key is rare???
When you're talking about 6xxx locks, you mean the key code? This cylinder has a 1xxx number and my 60 has a 4xxx number. If 6xxx fits either truck and is available new, I'm not opposed to getting all new lock cylinders for one or both vehicles. Some of these old tumblers are worn out and you could probably use a bobby pin to operate them.
I'll pick up some Houdini. The 60 rear hatch lock needs lubed up anyway and it will be good to have on hand.
And yeah, after that 62 was stolen from about 10 blocks from me, I have my guard up. The 60 now has some additional security measures, and it's probably best that the 40 does too. Being very basic vehicles, they'll always be easier to steal than a modern car, but I'd like to alleviate that a little bit. If you have any tips, I'm all ears (here or via PM).