When I was buying some second-hand turbo's, obviously there were a lot of options from the USA on ebay; as I'm sure any owner with a modified N54 will know, it seems to be harder to find the same level of modification options over here in the UK (or specifically for RHD cars), most the immediate options that pop up are from America or Germany which are often for LHD cars. Anyway, I have seen a few a posts on various forums asking about the differences between the RHD vehicle turbochargers a