The Rest O Ride seat was offered as an option on the hundred series and on some models like the 801 it was standard. Some of the parts like the rubber can be bought new off ebay and other sources. Parts are available depending on what you need but you may have to hunt them down. Somebody was even making the drivers weigh decal that went on the back of the seat for weight adjustment.
Basically it's up to you and what's wrong with it and how much you're willing to spend to make it right.
I have a few of these seats and think they work well if not broken. The one I have on my 671 need fixen, It's so bad that if you shift your weight a little you better be holding on to the steering wheel because it feels like your going to fall off. I don't use that tractor that much so I haven't gotten around to fixing it.
Post some photos when you get a chance.
Here are the pages for the parts you may or may not need.
http://i305.photobucket.com/albums/nn236/Kirk-NJ/scan0013.jpg
http://i305.photobucket.com/albums/nn236/Kirk-NJ/scan0014.jpg
Kirk
Basically it's up to you and what's wrong with it and how much you're willing to spend to make it right.
I have a few of these seats and think they work well if not broken. The one I have on my 671 need fixen, It's so bad that if you shift your weight a little you better be holding on to the steering wheel because it feels like your going to fall off. I don't use that tractor that much so I haven't gotten around to fixing it.
Post some photos when you get a chance.
Here are the pages for the parts you may or may not need.
http://i305.photobucket.com/albums/nn236/Kirk-NJ/scan0013.jpg
http://i305.photobucket.com/albums/nn236/Kirk-NJ/scan0014.jpg
Kirk
