As far as I know that is the only strut tower bar that was ever created outside of custom one-offs.
You can create a custom version if you have a friend with welding experience and a welder. Buy a 1/8" thick metal plate that can fit around the strut mount bolts and then drill your holes as needed to make it fit there. Have the friend with a welder put some steel tube welded between the plates and that's it.
A custom one would look something like this only not as polished and fancy: