I think that he is talking about the OEM manual top link.
Your tractor end uses a 3/4" pin and is only 1 3/4" wide. The implement end should be a narrow (1 3/4" wide) cat 2 end. (1" pin) Then use a reducer bushing for cat 1 implements.
Not sure how easy it's going to be to find that.
You might need to get a straight cat 2 top link (2" wide ball swivels) with some floating bushings and do some grinding to get the ball swivels to fit for width.
Yes any of the 3rd party links are fine, or even better, if you can find one with the right ends.
I believe that the midpoint adjustment should be around 30".
Good luck.