No! Absolutely not! This is not a job for epoxy. This requires brazing the mounts to the fork. Either buy a new fork or get a frame builder to do it for you.

Do it right or be sure your medical insurance will cover your trip to the emergency room.

BTW, although adding the mounts will require repainting the fork, if you paint the fork black, it should look good with your current frame and you won't have issues with matching new paint to old.