So an adjustable side link with a crank handle. You will need to do more research to find one that will actually fit your tractor. I don't know of any that are specifically made for your LS tractor.
Or you could go hydraulic and have that adjustment at the tip of your fingers.
Picture is just an example and that unit would not work for your tractor.
I just wonder where in the world he would get one of those! A hydraulic side link, is super nice and used in conjunction with a hydraulic toplink, makes adjusting on the fly SOOOO nice you'll wonder how you did with out. Brian at FiteRite hydraulics offers top quality units custom built for your machine, he would be able to fix you RITE up.
He is MntViewRanch here on the site, and the one that as been replying to your thread.