IMHO I think that is an 8. If it were a less desirable 1X8, 1X9 I would say lower but you don't see many 86's or ones in that shape. If it were mine, I don't think I would want those chains slinging around near those lights or a near perfect fender pan. I bet if that tractor was washed and the paint buffed out it would be show quality for an original machine. Very nice find Chris.