Associated springs work real well. I got the soft set and they were a very good fit. Only problem was the soft Associated springs are......black. Make sure you get the rear springs because the fronts seem too narrow to fit over the CEN shock bodies without a bit of persuasion. As for the need for aluminum bodies for your shocks, it will be one of the first upgrades for any subsequent Fun Factors I might buy. I reckon it is well worth the money. JMO.