There are two main manufacturers for the repro sheet metal.

Goodmark good to OK quality and fitment

Dynacorn - good to very good quality and fitment

Check with the retailers as to what company they get their sheet metal from... and go with the Dynacorn product. From what I hear it's a much better quality, but still not perfect... (nothing is) FYI Dynacorn is the company reproducing the 69 camaro whole body!

Good luck, and let us know what you find!

Brett - 67 Drop Top 455!