It's an FLM chassis. It didn't come with any mount, just the chassis and the chassis braces and hardware. The antenna mounts mentioned, they don't need any extra fabricating do they? I'm a fan of bolt on and go. That and the fact that when i did try to fabricate something it looked like a 3 year old did it.
Most antenna mounts usually mount with a screw from the bottom, that's it, done!
"if you've got something to say, say it peacefully"