You NEVER raise a car to match it with something else irrelevant on the car!
Take off the Mancini snubber and sell it to some racer with limited driving skills, like a dragracer...

On my '73 Dart I run 7 blades per side (because of 2 LPG tanks in trunk) and a 1" lowering block to bring it down to my liking.
Adjustable Hotchkis shocks up front and adj. QA1 shocks on the rear axle, with stock snubber.
I don't recall how much play there is but I never feel the snubber hit the body. Probably due to the stiffer rear springs that axle windup is limited.

225/50/17" Michelin tires all around.