You can probably just make one that is sufficient out of some steel bar stock and some bolts. Just bolt a short section onto a long section making a lower case "y" shape instead of a capital "Y". Be sure to wrap the strut shaft near the nut. Last thing you want to do is slip off nicking that portion.
i would recheck that gland nut after some hard driving. i didnt have a tool, so i put it in a vice and turn it with a bar as tight as i could. i checked it again after some hard driving and the shaft had play since the nut loosened up.