I used JHR but I did not lower the engine (you have a choice with them). I put them in as a preventive for shifting and gate blocking from engine torque/twisting. I was pleasantly surprised how they improved the shifting (in my car) but they do increase the NVH a good bit. The V6 flywheel decel vibe is now like going over mild rumble strips. As I said, this is one of my fav mods but if you like your car to be like a Camary this ain't for you. Mine is a nice day toy and I kinda like the mechanical feel.
2012 V6 traded in for a 2017 VW GTI.