From what I've learned, the current stock of NOS GM fenders is from a stamping done about 10 years ago on worn out dies. Their is a place in MI, Camaro Country?, that has some earlier stampings but the cost is way more than $450/fender.
The Dynacorn and Goodmark fenders are made in Taiwan even though these are American companies. I personally don't have a problem with this as long as the quality is commensurate to the price. Also, there are a lot of Americans making good money in the classic car restoration market even though they are not traditional auto factory workers.
I wish I could comment on fit. I like the crispness of the DII fenders so much more than my NOS fenders that I would consider switching to them on my current project if I had a way to test the fit before buying.
