3" drop coil measurement request

[91rcsb]

Hello,

I currently have 1 coil cut off the front coils in my '69 c30. I am about 30 3/4" from the ground to the bottom of the fender lip and 1" of bump stop clearance. I am trying to find out if c10 3" drop coils will net me any more drop. The truck has front drum brakes and no plans of swapping to disc. I also didn't like the idea of cutting 1/2 of a coil off to gain any more drop. I will attach acouple pictures of how it currently sits. Please ignore the unbolted shocks, missing inside dual, ect. I tinker on the truck when time allows.