the bumpers mount to the same location your stock ones mount... their are 4 bolts on each side that you can you some grade 8 bolts on.... as far as plans on how to make them i doubt any of the big bumper manufactuerers will have them available.... best thing you can do is get some cardboard and tape and start making half of it like that until you get something you like
from their just start cutting your steel and start welding... here is a pic how mine mounts... i know that the ranch hands mount the same way...
