For all you original 6.0 owners out there...don't sweat it. The version II is basically an update on some of the parts. If you were to order replacements of those part #'s they would be the new items...but it's not likely to give you any significant performance gains. As well, it's more cost effective to just buy a whole new kit rather than just order the updated parts.
If you don't have the common spares already for yourself, it may just be well worth ordering a new kit for $189.99
For possible new owners, the updated parts are worth it.
As well, we'll soon start getting more anodized parts and other stuff too like possibly some ti-stuff too.