Looking back thro my collection of euro sms carts i found out about five are infact usa carts. Im not sure where but someone here was asking about whats the differance was between euro and usa carts was.
From my collection ive found out there is two differances one being that the booklet inside is in one language and is of different orintation. The other is (and this may help if its cart only) that the screws holding the cart together are different, the usa has cross hed screws and euro some werid bolt that ive not seen anywhere else.
Hope ive been some help to someone!