you drill a hole and mount to your radiator core support... just dont drill through your radiator - its actually a pretty easy install....you might need someone to start one of the top bolts for you while you hold it from below though... HTH
I have just put the Rcj on mine and RCJ sent me the wrong clamps for it, and when I called to get him to send the right ones they wouldn't send me any new ones, so check all your hardware.
I lined mine up so the holes where I drilled did not hit the AC condensor. You first need to install the tops bolts so you can then move the bottom to line it up. At least that's the way I did mine.