The UK version was slightly different than the US version, I think it was the bulb, oh now I remember, the refractor was a different size, the US bulb didn’t fit in the hole but I just drilled it out to enlarge it for the US style bulb
I asked for an xj6/40 but was sent an x300 which is totally different that’s why I am returning it, Unfortunately auto reserve have not got one for my car