Cam headers on Ebay seem to be the MAC's just in SS. As for ease if you want to do it yourself, drop the K member. Its going to be more in labor to install the headers than the cost of them.
I have the SSS cat back with a BBK O/R X. I get lots of comps for it. It's loud though when on it. At cruising it's louder than I want, but I'm going to fix that soon. Give me a pm for more info.
Chad