Camber Bolt Adjustment

what are you using in the rear? I would think you'd want to keep your front and rear ride frequencies within 10% of each other. assuming 3400lb with driver and a 55/45 weight bias for my /6, no PS/PB/AC car, I get about 1.31/1.46hz front and rear if I get the 130 lb/in rate 6 leaf 340/360 spec springs. are you running circle track springs then with the big t-bars? was temped by the price of the speedway 175 lb/in springs, but figured that would be way too stiff and unbalanced with my .92" bars https://www.speedwaymotors.com/Speedway-Chrysler-Type-Multi-Leaf-Spring-175-Lb-Rate,3526.html
I have 121 lb/in AFCO's with a Hellwig E-body (7/8") sway bar. The 1.12's in the front are 300 lb/in. The AFCO's are no longer available in that rate.

Most of the guys that are doing road course and autoX are running rear springs in the 130 lb/in range with good success, I don't think I'd want to go above around 140 lb/in or so in the back. AFCO does offer a Chrysler style spring in 142 lb/in, that would be the highest I'd consider unless something changes dramatically. The Mopar oval track springs were 120-130 lb/in.

I ran super stock springs on my Challenger for a while with 1.12" bars in the front (270 lb/in on an E-body), the car was too stiff in the back with that combination.