Based on my recent experience I would use Dynacorn. The sheet metal were straight out of the box and didn't take much to get the fit were I wanted it. Still takes a little work. The trunk, door and quarter I bought are far better than the Goodmark pieces I used in the past.
If you are looking for a dealer I may be able to help. My buddy was so impressed with there stuff he inquired on becoming a dealer.
AG.
Did you install Dynacorn Challenger fenders?
A close friend did at his shop and the hood gaps were totally screwed up.
Go AMD.