In the process of building a round tube rear bumper for my 04 silverado 2500ld out of 2" .120 tubing. I am building it to house a winch, integrated receiver hitch, and clevis mounts.
My problem is trying to figure out how best to attach the bumper to the frame to support the stress of the clevis mounts and winch. I was thinking of using two 1/4" steel plates. One will mount to the orginal three bumper bolt holes in the side of the frame, and the second one bent like the mounting plates for a receiver hitch mounted to the 3 bolts on the bottom of the frame. Sandwich these together making 1/2" plate with holes for the tubing to run through and weld. Then stack two more 1/4 plates to the mounts and drill a hole for the clevis mounts.
Would this be strong enough to use as a recovery points? I know some of the offroad rear bumpers use clevis mounts, and was wondering how there's mount up. I can't extend the mounts further into the frame because the spring mount has rivets that protrude out.
Any suggestions or comments would be great.

sounds overbuilt,2 pieces of 1/4 is already way stronger than factory frame you want to bolt it to,may try & run gussets or support tubing in front of spring perches to grab more frame than just last 6"s,also build in side support so it doesnt twist when winching but theres nothing wrong w/overbuilt

Yeah, have some "kickers" coming off the bumper away from the normal frame mounting points and have them attack to the frame ass well.

You just have to spread the load out.

I have a large front winch bumper that has mounts raised to incorporate a 3" body lift. On some big pulls it'll lean forward a little so I'm going to make some small "links" with small rod ends from the top of the bumper to the front crossmember.

If you don't understand, I'll eventually have some pics of it.

I'm going to make some small "links" with small rod ends from the top of the bumper to the front crossmember.



Sounds overly complex to me, but it'll probably look neat. *shrug*

2 1/4" plates bolted to the frame is good. drill it so you use every hole. if you are worried about the frame make a matching plate and sandwich the frame between them. it gives you something solid to weld to. any recovery points you add keep them inline with the frame ends or between the frame mounts, it reduces stress on the bumper. I overbuild my bumpers, you never know what they will be up against.