Better wait for the new BERK Technology IC. They are a little bit more expensive but come with all the shrouds, a fan and all little things that the XS one is missing.
They will also provide Test data before they sell them.
XS Power If you do a search on this forum for XS youll probably find a few horror stories. I havent read anything bad about their IC but I havent read anything good either. Theres plenty of horror stories about their poor quality downpipes and manifolds on here.
If I were you I would steer clear! (Just my 2 pence worth)
Rory