first off why would anyone put just a tube k-frame in their car and use all stock suspension parts? how much weight can it really save? whats a stock k-frame weigh? 35 pounds maybe? a little more if braced and fully welded? i just don't see the pont in it.
second the RMS unit is a complete system. when you buy it you get everything to drive your car into a garage, install the complete system and drive back out of the garage. the only thing you supply yourself is wheel bearing grease and brake fluid. those other units all look to need quite a bit of money to make a complete system of. just saying.
