What Products are Needed in the A-body world?

Thanks for the input guys. I will probably put the "entire front suspension" setup on hold...seems people dont want to pay for something. We'll see how it turns out. Anyways, I will have to look into the brackets for the charger rear brakes...that stuff is actually fairly easy, and should be relatively cheap once the R&D part is done.
As for a 4-link...I have pondered this as well. I'll have to get under my car and look, but I really dont think you could make anything that is "bolt-in", but building a kit that had everything included may be a hit. I would probably do something along the lines of a triangulated 4-link, because the standard 4-link setup is fairly easy to put together by anyone with a few magazines.
The idea of an aftermarket torsion bar crossmember, something tubular has come up before...I like the idea alot. It will just take a little time...getting the factory one out of the way, etc. This may be a seller once I can get them moving.
I also have thought about an anti-roll bar for the rear of these cars. They are made for the Camaro's, Mustangs and just about anything other cars out there that people race. This would have brackets that weld to the housing, as well as a bronze bearing housing that would bolt or weld to the inside of the rear frame rails. I am not sure how these would sell...but we'll see.
Thanks again guys! I really appreciate the input!