I installed the Hasport RMM on my 19 Si. You can for sure tell the mount is in there. From idle up to 1500-ish rpm or low RPM take off and AC on is when you notice it. It made shifts really direct and less play in the whole drive train. Seems to accelerate quicker also. Made the in cabin...
I just ordered the older CTR assembly and acuity bits for it. I'm not sure i would buy the 2020 assembly yet. From what I've gathered the Acuity short throw adapter and the factory CTR assembly are about as short as you should safely go. Any shorter you run the risk of stretching the factory...