Need A Body experts. !!

I did... That question was avoided... I was told I may need to shim it until I get it right and make adjustments... Not sure what shiming would do or even where I'd shim.. This guy does great work.. I've seen several of his restorations, but this had me wondering... Maybe it's not as big a deal as I'm thinking.. Maybe he can fix easily...but yeah, bumper left off... I had to put wax compound on the welds and patches myself..and a few other things that had me scratching my head... although, he did do extra stuff at no extra cost...so it's hard to come down on him too much.. This may have me selling, taking my loss and be done with it... F'ing headache with this whole experience..albeit fun...lol
It can be fixed. Talk to your body guy and agree on a repair price, he needs to fess up to his part of this and suck it up some. Put a wanted ad on here for the correct piece, someone will have it. Or find a good fabricator. It sucks a lot, but it is repairable. Don't give up on the car.