From the pic the car could use a little less separation in the rear. Tighten up the extension on the shock.
Dave , it is a radial tyre car . I have left same shock settings as footbrake if there was more testing I would certainly try tighter
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive