I wouldn't be terribly concerned about the "rebody" issue. Kevin's car is far, far worse than yours and has no redeeming value other than being his first car. Yes, it's a '68 Charger but it's a triple-green 318 column-shift with few options (full wheelcovers, AM radio, and buddy seat). He'll only have the roof and glass frames, a relatively-small segment of cowl, very little of the rockers, and the rear-seat bulkhead and package tray left from the original car. The side skeletal structures are still OK except for the aforementioned rockers. Literally tearing the car in half has been a major concern each time it's had to be moved, since the major structural components on the bottom of the car are the sketchy remains of the rockers and transmission tunnel. Regardless of replacing damned near everything, somewhere down in the cockels of the structure it's still the car he bought when he was 14 or 15, so he's not concerned about the enormous amount of panel replacement. His motto: "Anything that can be built can be rebuilt." Most of it won't be what he had 30 years ago, but all that remains of what was will be a part of the car. That's all that matters to him, and make no mistake, Kevin's a resto/rebody Nazi.
I would suggest you pop the coin for the right VIN rivets. Don't drill out the old ones! Grind them away from the back side. If you drill 'em, they'll spin and leave the telltale scratches. For those of you following along at home, E-body VIN tags are riveted only to the dash pad. When I worked at Year One, there was a pile of E-body dash pads above the R&D department with VIN tags still on them that had been sent in for refurbishing. Federal law prohibits both the refurbisher removing them and Year One from returning them to the owner. There was a nearly-half-page warning about this in the catalog, but people don't bother to read. Sad, because many of them were high-perf tags including 340, 383HP, and 440 engine codes. Some of the owners hired attorneys, etc. only to find out that they were, in fact, screwed. At least Year One didn't report the VIN numbers, which would've put them into the federal database as stolen or salvage. There was enough grey area to get away with that.