The way the MP chassis manual reads, snubbers are for use with manual transmission cars. I had a friend years ago with a 73 Challenger. He was one of the first in this area to have a roller cam in anything. Had a 440 and 4 speed in it. He pounded a ole in the floor pan. We beat it back straight and added an angle iron cross member all the way across and immediately above the snubber. It didn't do it again. It left like a ***** in church too.