[Putershark]

I find that a little strange since years ago (2002), I ordered and then had modified (made longer) by a welder a 170 pedestal seat mount for use in a 210 So you should be able to order the part...

Now as far as the factory beefing up the hull to support one I would not know... All of the 170's I have looked at it do not "appear" as if they had anything different done to install one other than have the mount installed. Call the guys at Merritt Marine to get the "Rest of the Story"