Pinging Slantsixdan, et al: how to find parts to populate a Mopar fuse box?

Del, I'm afraid that any used fuse box on a 40-year-old car is going to be as crappy as mine is. Plus I've already bought an NOS box.

I wouldn't want to use Painless products because they are too expensive for my taste. I am a cheapskate, and am just going to have to DIY it. Hopefully I'll be able to fix it up better than new.