Subframe Connector "System" (Like for Mustangs)

Okay so I know I already posted a thread about subframe connectors, however I thought it might be better to start another for this one since it deviates from the original concept quite a lot. Subframe connectors are great, however i want something a little more substantial for safety. I like the idea of having nerf bars hidden under the floor pan the connect to the subframe connectors and eventually the roll cage. I found exactly what I had in mind for mustangs. I also had in mind an integrated driveshaft loop. I'm thinking one up for my Duster. It will also have an X-member and needs to include outriggers for the roll cage to mount to as well as they will extend the length of the passenger compartment. Obviously weight is important too, so I want to make sure I use as little material to get as much protection as I can. Using geometry to create a rugged structure this should be possible. Has anyone done anything like this before for Mopars?