My home made winch mount.  The stock bumper is boxed as well as reinforced along the front.  The mounting points are reinforced and larger bolts used (7/16" UNF grade 8, stock is M10).  I also lost the captive nut and put in normal nuts by holesawing access from below.  The mount itself is bolted to the bumper with 1/2" grade 8 bolts and to the front cross member with 3/4" grade 8 bolts.  The cross member had crush tubes weled in.  The bolting was sized for a safety factor of 5:1

The whole mess was galvanized.  It has worked well.  The only failing is that I should have reinforced the ends of the bumper as well.

Reinforced bumper installed for test fit
Reinforced bumper
Winch and mount assembly front view
Winch and mount assembly rear view

Not yet rated