Messing with the geometry of an independent suspension system that has worked for years sort of defeats the purpose of using it, doesn't it? I'm pretty sure the designers who built it that way had more funds and research facilities available to them than the average hotrodder with a torch, a sledgehammer and a welder. Badger, unless you have the necessary engineering expertise to design a suspension system from scratch, and a really good fabrication shop available to you like Coilover does, it's best to leave well enough alone.
Jerry