1982 was the overlap year. I don't understand why Yamaha did that when they had an all new line of 400's. To avoid problems when I order parts for my 82 SOHC I say it is an 1981 so I don't end up with DOHC parts by mistake. 1982 was the last of the SOHC Heritage Specials. Yep 16 inch rear. It was almost identical to the '81 Special, but received the black treatment where the 81 had chrome.