i lifted it up to a 3" space at the top of the strut and the cv's barely turn when straight and don't turn then wheel is at full lock.
with a 2" space the cv's move freely straight and are a little harder to turn at full lock but still turnable with one hand without clunking.
so the 2" spacer will be fine. If my cv angles change alot when i put in the diff lowering brakets maybe i will flip the strut mount