Not speaking for Gravel Maker here, but I'd have to say no it won't work for you.
It might "fit" but it would have different levels of effectiveness because your linkage is entirely different. They might both be called "Y" by some, but yours is the original "Inverted-Y" style that most of us refer to. In spite of the fact that RuffStuff is correct to say theirs looks like a "Y" (it does!) it's in effect what we would refer to as a modified version of the old "Inverted-T" linkage setup.
Your wandering is likely due to several different things working together, but not an inherent design flaw.
Did you start a thread asking about your issue? If not, let's do that so you can get a bunch of suggestions of different things to look for.
And a detailed description of what changes to your Bronco have been made (especially suspension height) and some pics of your steering layout and wheels and tires.
Good luck.
Paul