Claas is a name for the chopper mart in usa and not for combines the european combines very difrent other numbers and other typs. JD 2056-2266 i think is a bucket of scrap.
Never heard of the Johnny but there are one or two Claas Mega's over here in Australia. Have never seen one in the flesh, but have seen them advertiesed second hand and vaugley remember them being launched in the early to mid nineties.