Yeah, i don't know the weight. Since it's a 21 conversion, i don't really care. I'm a basher, not a racer. It is heavy though. It's plate steel. I cut it out of a 3" by 3' piece of flat steel with a jig saw. It sure took awhile. I did it to help prevent chassis flex with the 21 torque.
The only thing i could have done to make it stronger would have been to mount everythingn to a 4"X4" oak beam.
I did it because no-one makes skid plates for a 21 conversion and i was tired of digging rocks, dirt and mud out of my rear diff.