This is how we make ours. The half round piece is welded to the side pipe and as you'll see, it has a bolt through the middle that is adjustable. The tongue end welds or bolts to your frame or other possible mounting areas that your car has. The photo does not show the rubber vibration isolator, but almost anything can work. What ever you end up with, leave some slack when tightening the mounting bolt, so it can flex a bit. Otherwise, the welds may break.
