Ya, I realllllly enjoy the RS4's engine. I haven't started a build thread yet, but I'll share a link when I do.
My clutch setup has worked out really well! I haven't put any time into trying to setup the slipper function, but it continued to hold all the torque with only 220lbs of clutch spring which made for a super easy clutch pull. Much nicer to ride compared to the old setup.