I tried 002, and 003 SS springs with Caltracs in 1999. Didn't work. The bump valving needs to be pretty stiff, or it will wheelhop like you won't believe. I remember thinking "my overrunning clutch is dieing", as the yoke pounded the floor pan. That was with QA1's set below 50%. That was running 1.45 60's, with 5800 flash.