Just finished this winch mount upside down and inside the stock bumper. HF 12k winch ($299) HF Universal Mounting plate ($39) cut to fit JK frame.
1.) Relocate the vacuum pump.
I used the Quadratec one.
2.) Cut mounting plate to fit frame and fog lights.
3.) Extend wire leads so the control box fits under the hood. See troyboy build.
4.) Cut a hole in your metal and plastic bumpers. See troyboy build.
5.) Drill the frame for new mounting bolts.
6.) Paint and reassemble.
Pros: no welding, fare lead bolts to mount plate with no spacers, control box is up under hood.
Cons: yes it could be submerged, when you go to use it, in this mount location I took that into account.
Its my first mod like this but with this forum and youtube a guy can pretty well work through it in a few evenings.