I would suggest having the O2 bungs relocated to angle the senors like this / \ in the collector. I had the same issue on my 12 and it would eat up O2s on E85 until i relocated it.
I concur bud! We have a stocking order due in this week ;).
I have a set of ARH catted coming in for a customer car that will be paired with the sports. Maybe I can talk another buddy of mine with the Xtremes to swap axle backs with him so I can make you a catted video ;)