With torsion bars running at $300 a pair and a stock rubber front-end rebuilt kit costing close to $400 ( not including a sway bar ), you're coming up short, and still have to spend more money on brakes unless you've already tossed the drums.
By the time that you're done, you'll pay more for the CAP kit and whatever you order for brakes/suspension/steering from other companies than what you'd pay for an Alter-K.