here is how I would like to see you proceed....
1) set the car at desired ride height...record measurements
2) hang the engine with oil pan/trans in the bay where you want it for ground clearance on the bottom vs air cleaner height/clearance on top.
since the rack sits under the oil pan ..in front of the sump...measure the difference between the bottom of the oil pan in front of the sump (where to rack will sit)....and the bottom of the frame rail where the K-frame attaches.
this tells me how far below the frame rail the rack can be placed. all other suspension pieces are placed according to the rack height
let's fit the suspension to your build...not your build to the suspension