If you change the OEM rearschock of an 2011 ( nonR) street triple to a CBR600RR shock, you will notice that the rear will lift (3cm) . It will be about the same as an 2011 street triple R.
If you are fine with that there is no problem.
I combined this modification with changing the stock suspension plates by DIY flux mkII plates. The flux plates will help correct an overly enthusiastic rising rate ratio but as a side effect they lower the rear a bit.
The standard street triple spring is soft, but when going in , it tends to bind (become suddenly very hard) very fast, giving that harsh ride on a bad road. Changing the 2 plates (between spring,swingarm and dogbone) changes the geometry and has an effect on this binding, making it a bit more lineair/less progressive.
So in my case the combination between the CBR600RR shock and the flux mkII plates gave me the same ridehight as an OEM street triple (non R), BUT it rides less harsh and gives you the possibility to change compression and rebound.
Read the topic about it. You will need new bolts and some spacers in the form of washers of the right thickness. For the rest it is an easy mod.