Are you refering to rancho 44044 springs (4'' lift full size wagoner/cheorkee) ? It was a common mod and still done from time to time. I helped this local guy put them under his taco, they work well ,but I think his truck ended up kinda tall. If you are wanting to lift your truck useing junk yard parts then just use hybrid rear springs.
![My Two Cents :twocents:](https://board.marlincrawler.com/Smileys/marlin/twocents.gif)
If you are gonna buy springs check out marlins springs. I hope ya got enough dough for a quality crossover steering system, I run marlins hysteer kit and love it.