Installed my 75a Red mount yesterday and OMG, what an amazing upgrade! It for sure vibrates down low and is a little harsher, but I quickly got used to it and it doesn't really bother me anymore.
Everything feels much more connected with the drive train, shifts feel more precise and more solid. I had a hard time getting it into 1st to 2nd when taking it up above 6K, not anymore, shifting feels much more effortless. Love it!
This also might a placebo effect, but I did some quick lane changes at speed (on a closed road with no other cars or traffic) and I swear to god, it feels like it reduces body roll and doesn't seem to throw the engine causing it to transfer weight in the wrong direction making the car feel unstable. Just feels more hunkered down.
I wish I would have done this upgrade to my GTI when I had it!
No Brainer upgrade!