Need input on quarter skins please

For the most part you're locked into having to deal with 3rd world parts. I bought 2 qtrs for my Dart and they were in my opinion, marginal. The problem being is that instead of being nice and flat the metal was somewhat wavy. I was fortunate enough not to need the whole panel but just the very bottom lip so I cut the rest away. I know of other guys that have had to do a fair amount of metal finishing to get things right before laying on some paint. Unfortunately there aren't many options.