Caltrac Tuning Info LOOK HERE
the /6 springs are your best option besides the mono leaf or landrum spring. john calvert himself told me that. very good info on the setup, i wish i had a guide like that 10 years ago. these bars by far are the best bolt on suspension system on the market. 60's dramatically inproved over s/s springs and car became alot more consistant which is very important to me because i bracket race a 4 spd car. newbies to caltracs pay attention to these setups, it will be a way happier experience .