Damn, that's insane, especially you trying the led's. I could see how hid's could cook em, but no way in hell that the led's should. The stock halogens should be hotter than them. Is there any way to warranty them?
If it were me, I would say start finding one that's a proven winner, or some even at a junk yard, and then fab a bracket, but fab it to connect to the existing bracket so youu dont have to worry about connecting to the bumper itself.