Is there an RTC 3.0 plugin for RAD and RSA?

Hi, I have RAD 8.0.3 with RTC 2.0.1 plugin installed through P2 plugin (Add new software) and it was working. But now as our RTC server got upgraded I am forced to update my RTC plugin but its not letting me to install RTC 3.0.1 onto the same package group with RAD as the older version already exists.
When I try to remove the older version through Installation manager its not listed as I installed it earlier through "Add new software". And there is no option for removing any software installed that way.

Please help if anybody has come across this kind of issue!

Hi,
I would like to integrate code review tools like Check style along with RTC. I have already installed RTC 3.0.1 as a plug-in to Eclipse 3.6.2 and it is working fine. Please let me know the procedure how to integrate Checkstyle with the same.

Regards
Biswajit