I have the caltrak setup and started with the Rancho 5 way adjustable.They did not work that well for me so after a few years I was looking at better shocks
and liked the way Vi-King took the the time to make the sale and I bought all 4.I can tell you that I am hooking now.The only adjustment I make was one adjustment on the cal trak when the car started going right.That turned out to be broken spring perch when on the next pass the car went right,,,,,,,right onto the marbles.
After that I tightened the Vikings one time.I have been so busy getting the 2 carbs right that if it hooked and went straight I have NOT tuned the rear.
Best 60 so far is a 1.42 with a 6.0 1/8 @ 117 and finished with a 9.3 @ 147.75.
1963 b body now at 3700 with me in it.Buy the best shocks you can afford!