'67 C-30 Frame & Suspension

[A-J]

Hi everyone

I've been reading on the forum for a couple of weeks now and I can't quite seem to find much info for what I'd like to do (if possible). This is my first truck project and the goal is to lower the dually a significant amount WITHOUT bags and retain the bed load capacity. I don't know for certain, but perhaps 8" in the rear & 6" in the front.

Most articles I see deal with airbags when it comes to the frame. What are some of the methods I can use to lower the rear of the frame without bags? I know there's C-Notching, leaf spring flips, and I've seen people "Z" the frame. What's my first step with regards to this decision? Do I determine my exact ride height that I'm looking for? I've attached a picture of the truck.

~ AJ