was 1980 although he had at least 3 more season that are comparable, meaning around the same number of catches, yards, and td's.
89 Rec, 1290 yds, 14.5 YPC, 9 Td's
The other thing about Winslow is he was sharing the ball with John Jefferson, Charlie Joiner, and Wes Chandler.
Important to note that Winslow was 6'5" tall and weighed 250 #'s, pretty comparable to Gronk physically.