Interested in mini crawlers

[msw129]

Hi, I'm a new member and am looking for any information on mini-crawlers for sale. Currently have a 1950's Trackmaster mini-crawler with a blade on the front and backhoe on the back. Old machine still works well. Looking to buy parts machine, if anybody has one for sale. Tracks are 8" wide, motor is a 12 hp briggs and stratton, belt driven except for hydraulics for the backhoe.
Would be interested in any other small crawlers for sale
Thanks
msw129