Yes the higher comp rotors are gonna give you much better low end response and OBVISOUSLY can handle boost up to 18psi on 91 octane...my old motor proved that.

I just like to play it safe now and for good reason.
Let me know Kyle if you want help doing a price break down. I also Have a lot of misc parts around my gargage that are in great shape: Oil control rings, corner seal eyelets, oil pumps, CAS's, Rear gears, front gears, oil pans, injector diffusers, ect ect.
I even have a S4 TII front cover for ya!