Well, I went ahaead and used the nutserts. Everything went perfectly except for one that didn't pull quite right, and now spins inside the hole. I can see it from the inside though, so I'm going to try to epoxy it in place. After that one I made it a point to crush the living hell out of the rest of them when installing, and they all feel very solid. The rear uppermost nutsert on the back flares needs to have the hole drilled through both outer and inner fenders for it to fit flush with the outside of the body. I didn't do this on the first one and as a result, thats the nutsert that spins now. I also used a thin layer of Gorilla Glue on the nutserts before installing them. This glue expands quite a bit while curing and should seal up any gaps between the body and nutsert.
The MSA flares fit up decently. The front flares have a few areas that don't quite sit flush with the fender, but I think they will be OK after I trim the wheel openings in the fender, the extra flex from removing the fender lip should allow the sheetmetal and flare to conform together a little better.
It was dark by the time I got finished, so no pictures wrth posting yet. I should have some decent pics up by tommorow.
Mike