Hello, I’m new here at the Mini ́s

Moin moin, bought me a Mini R52 Cooper S Cabrio JCW. I’ve never driven him before, but I’m already looking forward to it. Now I’ve read a lot here, but could read little or only confusing about the generation of the engine, or JCW kits. It would be great if you could bring me something up there. So : Cabrio Cooper S JCW Sidewalk from factory, pretty much all the extras. Production 03.2008 delivered 05.2008 I’ve always read that there was a facelift, and also JCW v has been changed, even in the compressor era. Does this concern me? Thank you for your help village