Grady pedestal seats...1990's
The exact OEM match for your original pedestal seats is a Wise Pilot Chair, part# WD015. A quick search online shows entire package of seat, slider, post, and cushions availble for as little as $159.99. Good Luck !!
Okay, if anyone else can see this, let me know and I'll post some pics of my rebuilding process for the smallest Tournament GW offered. Tournament 170
...and BTW, this ain't my boat !!!