I purchased a Draw-Tite hitch and it installed easily with 4 bolts just like you stated. A couple of ratcheting wrenches and 5 minutes. Thanks to all.A lot of the JK aftermarket bumpers are designed to work with the factory hitch. I would try to find the listing for your bumper and it will probably state that it does. You can get a hitch from any 4x4 website, amazon, etc. I think mine was around $50 and they attach with 4 bolts.