99% certain they are mph and straight swap in less than 30 mins mate.
I got these from Octet so could confirm with him but I'm sure I would not have got them if the were kph, I never got round to fitting them but he tested them in his - even had a little vid of it but I can't find his post.
He took them out as he was going to get the odo reset to match his cars, then he got the 370 so sold them to me - I did the same