Depends on where you're going through at. I THINK you have an inch or so under your rear pan before you hit tank, but I could be wrong. There's a write up in the Builder's Corner for how to raise your gas tank. Check that out for the pics. It'll show everything that's underneath your rear pan and hopefully that will help out. However, if you're looking to cut and drill anyhow, what about finding a mounting method to where you could mount it to where the seats mount? Use a little creativity and see what you can come up with. I'd sure hate to see you either hit something under the pan, or drill holes that don't need to be back there and open yourself up to rest problems or anything like that.