69 Chevelle SPC Rear Spring issues

[nitetrain4590]

I might be overreacting, but I need some help figuring out a problem with my rear suspension setup. I've got SC&C Stage II plus set up on my SBC 69 Chevelle....front looks great and sits well. The rear is a pain in the a$$. After getting the Spohn Rear adjustable upper and lower control arms set to give the rear diff a 2.9* pinion angle to match my transmission, it looks like the rear suspension is lifted more than lowered. I've got SPC springs front and rear, and the rears are supposed to be 1.2" lower than stock. Here are the pics of what it looked stock, and what it looks like now with the body back on it.

Before:



After: with SPC Springs and Spohn Rear upper and lower control arms





I did have to take in my lower control arms a bit to make the pinion angle work since I had to take in my uppers so much, the springs were leaning significantly in their perches. Is that supposed to happen and do I need to leave the lower control arms at stock length? I don't buy that my "springs will settle" that much. On top of it, I'm running 305/35R18s that are over an inch taller than the rollers that are on it now.

Does anyone else run these SPC Rear springs on their A Body? What rear springs are guys running that give a more even ride height compared to the front... aka 11" 175lb/in spring????