I mounted mine with set screws.
I have no plans on actually using these to jack up the car with, and with the way they are mounted to the frame, they are for looks anyway.
I had them painted by powder coating so I had to sand the paint off pretty good where they insert into the inner section. I then drilled and tapped the inner piece to accept a set screw. This will allow me to adjust them in or out to make them match. Iím not sure if this is really an issue, but Iíll find out.
I inserted the rubber grommets and then used my car washing soap to slick the tubes and grommets down to make it easier to insert the tubes. I then tightened the set screws and there we have it.
One modification I did was on a license plate holder. I ordered a mount that offset the plate over the trunk handle but it didnít look right to me at all, so I decided to use the jack pads for some useful purpose. Bending a piece of aluminum and drilling for the mount and license plate, I then painted it black to match the Jack Pads. I used the bottom bolt on the back side to mount the new bracket. I think it turned out pretty well. (And it was cheap!)