It doesn't really matter the durometer rating of your mounts if the dogbone mount is still stock or just has an insert shoved in there to fill up the holes. The engine and transmission mount are on the side and don't do anything to stop the torque from pitching the engine. The real movement and rocking of your engine is going to be controlled by the dog bone mount. I'm not just saying that theoretically either. I have the full BSH mounts in and I still have plenty of slop in my drive train, whiteline WALK installed and everything too.
I have to completely disagree, I installed the Motor & transmission mount in the engine bay first and then installed the pendulum mount later.
a Majority of the slop was absorbed from the motor & transmission mount while I hardly noticed anything from the addition of the pendulum mount.
Not to dog on the pendulum mount as from what I have read it is a great piece when used by itself, but you get a majority of the gains from the motor & transmission mounts.
The durometer of the material used in the mounts will also play a major role, BFI makes 3 different stages with varying durometers.
Also people have swapped torque mount insert with different durometers and reported different feelings.
My motor now feels completely planted, and I am eyeballing the WALK as I want to get rid of the lift when I mash the fun pedal.