K-frame

I was looking over Firmfeels website and I stumbled upon their reinforced K-frame. Also found this old thread about a tubular K-frame: http://www.forabodiesonly.com/mopar/showthread.php?t=26353

I want to keep torsion bars and would like to keep the factory steering setup. But would like to make this as rigid and light as possible. What I am trying to figure out is whats going to be the best bang for my buck?