I just put a Police solo seat on my 08 RKC and it is unbelievable. I have some back issues, and have been trying to find the best seat for me, and I think I've found it. This thing is really comfortable and seems to smooth out the bumps and potholes. I bought the Mustang pillion when my girlfriend wants to ride, but 90% of the time I'm solo. Anybody looking at a solo seat should really check out the cop seats. If I could figure out how to post pics I would. Just wanted to share this n case anybody is looking to change out their seat.

 

I'd like to try one but don't know what i would have to do to adapt it to fit a "T"-Bar. I need to find someone that has one I guess and take a peek at the underside.

Glad it's working for you.