I have the same sort of design on one end of the rear A-arms on my Conquest to adjust toe... The A-arms are two ended(two mounting points to the rear subframe) and have eccentric washers with adjustment markings.
It should work fine, but how much more adjustment if any over stock would be unknown until someone speaks up. That and if they would throw out the toe or not if maxed out..
Seems to be similarly priced to the Megan rod's for the rears and cheaper than the front cusco upper control arms for the fronts.