These mounts offer numerous mounting options.  The bracket is 2" (51mm) wide, 5" (127mm) long and 0.100" (2.5mm) thick stainless steel.  There are four mounting holes and enough stainless steel hardware supplied to fill each one.  The stud mount hole has a full 1" set back for use with FireStik's Dome Mounts.  If you can find a flat spot on your vehicle that will set still long enough for you to drill a couple of holes in it, you'll end up with a great antenna mount.