Fiting my body kit on correct?

I just bought a G2 and the guy I bought it from gave me an agressor bumper with it. The problem is that it dose not fit right. It is as if the right side sags down more then the other if you look at is stright on. Right now I only have it bolted on in the front where the only holes are. I also have a full WW big mouth that fits fine so im not sure why this dose not fit… so if this is fixable, preferably with out driling I could use the help.

91’ LS
17" Concept Neeper Titan
Full WW Big Mouth & Agressor
2.5" drop

All show, no go for now…

The holes are probally drilled in the wrong spots. Or the bumper could be old as those cheaper VIS and other brands tend to sag after awhile. Stick with the ww big mouth