Start here, might find someone that has done something similar already.
Dodge
Or
Have a look here.
On the other board, there was a large debate about whether steel DOM or solid aluminum was the way to go for linked suspension. I'll give my specific vehicle but would love to see any "generic" opinions. My rig is ~4,000lbs; 472 big block cady, front kp d60, rear d60, full/half body(think s10...
irate4x4.com
Or
Type different search terms into the search bar at the top right of the page.
Absolutely nobody here would have guessed you were talking about a 1996 dodge dually.
So detail as much info as you can possibly come up with and you'll get more feedback on it.
Help the good folks here to help you.
edit: Do you know what you're doing setting up linked suspension on a vehicle? Why do you want links?