Jon,
After dealing and buying reproduction panels/parts of various description, I’m not surprised your hinges didn’t fit. Taiwan parts (are they still arguing if Taiwan is part of China...? 😉) just don’t beat old USA stuff. I have used various patch panels of sheet metal, but I would rebuild every single door latch/ hinge before I bought a “stock replacement” aftermarket. The odds aren’t in the buyer’s favor. Buyer beware, but after searching hinges/aftermarket here on the Bolt I would never buy an aftermarket hinge/door latch.