It's tough with guys like Shore, Cleghorn, Seibert. Throw Gonchar in with that crowd too. With the time machine, lets take a prime Gonchar and put him on say the 07-08 Penguins. I'd reckon he'd finish with around 12 goals, 53 assists for 65 points. Probably playing around 25:55 a night, shooting 6.9%. Probably rack up about 66 PIM. I think he'd probably be good for 4th in the Norris vote.
It's such a crapshoot with those old guys though. None of us saw him play, we've just got the newspaper clippings to go by.