cruise control?

anybody ever hooked up an aftermarket cruise control unit on a 80s dually? if so where did you get it from or do you know of stock components i can piece together to make it work with my cummins swap?

I've never done it myself although my grandpa has added cruise to just about every vehicle he has ever owned. He has always bought the more expensive units from JC Whitney and had really good luck with them. I typically avoid JC Whitney like the plague, but he has always bought and loved those pieces.