[theastronaut]

Since you're on a budget, throw some progressive bump stops on the shock shafts if possible to firm up the spring rate for only a few bucks. I've used '99 VW New Beetle rear bump stops (pn 1J0512131C, less than $5 bucks each on Rockauto) on lighter cars to limit body roll without increasing the base spring rate. That keeps the suspension softer to absorb mid corner bumps better but increases roll resistance without the drawbacks of stiffer springs or heavier sway bars.