I'm thinking of doing the same thing. Take a look at
www.djmsuspension.com There you can look at the installation instructions for a 73-87 truck. I'm just not sure if I will have to remove the bed or do any welding. I also noticed that they are selling them for about $130 which is a good price considering ECE wants $350 for drop leafs. Good Luck!! Maybe we can work thru this together. What year truck are you working on anyway?