So it was too close to run a stock snubber plate even before you ran the Hothchkis Springs?
Is the rear at the height you want? Is the rear wheel tucked into the rear wheel well like you want? That will determine how close the rear end and driveshaft are to the floor pan of your car no matter what rear suspension you use (leaf, 3 link, 4 link angled, etc)
What size rear tires are you using?