I'm not located near Indiana, but this is a previous post I made on the subject:
I'm 6'1", long waisted. My helmet tapped the tent poles of my soft top. So I put in the TALLrails kit from Sector111. Head clearance was great, but my left knee was so close to the steering column that the legs straight out feeling was gone. A lot less comfortable. I had to swing my left knee to the left a few inches to clutch.
Kirt at Hypersport pulled the seat, redrilled the rails and moved the whole seat directly rearwards 2+ inches. Awesome now. Really fits. Line of vision is lower, just feels "racier" too.
Oh yeah, that kit is not quick or easy to install, but worth it.
I think I gained more than 2 inches of headroom, and could have gained more. The seat angle can be adjusted, I kept mine with about as little angle change as possible to try and keep my knees form the dash.