Even junkyard 3.7 engines and 45RFE/42RLE transmission are like impossible to find around here. I've been to pretty much every you-pull junkyard in Colorado. Of all the Liberties I've seen, I don't think any still had the transmission and/or engine.
Local U pull has 4 KJs, all with engines/trans. Maybe they're blown? Guess they have to be in the yard for a reason.