hi guysi m looking to buy earlier batch of E39but i read on a post stated that UK spec doesn't has some accessories, and Jap will have more accessories , but y still UK spec pricier than JAP spec ?also does all UK spec come with multi-function steerlig? also if i wanna upgrade from std steerling to multi-function steerling, is it possible to do this on like 97's 520/523? if do, how much does it usually cost(wanna get a used one)?thanksDave