I am going to take a look this afternoon in the wheelwell again, but after finding this picture on Rocky Road's website my idea may not work.
I have pretty much convinced myself the whole engine cradle can be lowered 1-1/2" along with the transmission crossbar lowered 1-1/2". Lowering the front subframe with steel or aluminum spacers and longer grade 10.9 fasteners. Next was to lengthen the lower section of the steering column shaft between the last two u-joints. The 1-1/2" is the max because the headers are getting very close to the steering column u-joint. If I was running stock exhaust manifolds 2" may have been possible.
But I also thought there was room to re-drill holes 1-1/2" lower for the Upper Arm pivot points. With the way the body is constructed in that area, that may not be possible unless a section was cut out and new welded in.