73-87 Truck arm conversions?

[chevyfanaddict]

Hey everyone I have a 75 C-10 Silverado and I want to airbag my suspension but I would also like to convert it to an earlier style 60-72 truck arm rear suspention. Does anyone out there know of any conversion kits to make this possible. I thought Porterbuilt was doing one but cant seem to find it on their website. I also know of the CCP setup but not sure if I like that one. I would really just like to be able to use some factory parts if possible.