RAR/CC 5.2 and GRC AC 5.3 version issue

Experts-

I have currently RAR/CC 5.2 installed, configured and running on my system. Is it possible to install and run other 3 modules of AC5.3 excluding RAR5.3? Is it necessary to deploy all 4 modules of AC5.3 and can not I skip RAR5.3 and deploy the rest 3 modules. I searched many places but dint get any conclusion. Please advise. Thanks! Ashok