Question about split mono-leaf springs from Calvert

The amount of separation will vary some depending upon how tight or loose the extension setting is on the rear shocks
Yep. I have the Rancho 9-way rear shocks. They are set on either the 4 or 5 click - pretty much in the middle. I need to further tune mine so it may/may not be ideal. 1.51 60' time was its best so far. I share just in case it may help someone else. But someone smarter than me may do better.