What rear suspension for bracket racing.

Same as Cal Tracks. No idea how old or how used the SS springs are. I got them in a parts deal in 2012. The CE stuff I got in 2016 with maybe 400 miles on them. I put everything on the car in 2016. It was my buddy’s idea then. When I showed up at the track like that a few racers said right away that I can’t use them together. Car runs 10.40s all day long. In the cool it ran the best of 10.37. 1 turn by hand preload on the passenger side then only up against with zero preload. Factory rear shackles. Springs are inboard. Cant remember what the shocks are set at. 28x11.5x15 Hoosiers QTPs. 4.10 Dana 60. 3300 with driver. Kim