1970 duster super stock springs
I run two passenger side SS springs on my '68 Barracuda. I did add a pair of 1 inch aluminum lowering blocks. The car rides excellent, handles amazingly and launches predictably. They have been behind my progression of motors starting with a Slant 6, 5.9 Magnum and now behind my 408 stroker motor.
Here's a picture of the stance with one of my buddies.