I had mine sprayed and fitted by the bodyshop near me, they also fitted the exhaust. The exhaust you are buying is not a cat back system or anything like that, in my case my existing back box was cut off and the new R32 style one joined on.
They said, although it went on fairly easily there were a couple of clips for the old valance that had to be "adapted" to suit the line of the new bumper also the standard arch liners don't match up due to the rear being a different shape, although thats not a massive issue providing you're aware of it and give it a clean.
Another thing to bear in mind is that the OEM bumper comes in 2 parts, in the actual colour coded bit and then the bit that is black around the tailpipes, however the one you're looking at, like mine is one solid part so it eliminates the option of carbon wrapping etc, although the guy that painted it for me painted it gloss black for me.
I'll shoot out now and take some pics.