I'll start by saying that they are a nice part, but they are not perfect in several areas. The biggest issue I noticed was that the example I had was made from thinner gauge steel that an original, and the steel itself seemed to be softer as well (maybe a lower carbon steel?) So, the hood was VERY dent prone, just pressing firmly with a finger could put a dent in it. As for overall fit, it was a bit smaller than an original in all areas, not much, but I noticed it. Also, they didn't come with the hood scoop inserts when I bought mine, I don't think they do now either.
I believe the reason for theses differences is due to the use of this different , thinner, softer steel is due to the type of molds they are using to produce them, it is a cast resin type mold, they can't stamp the heavier steel with these molds so that's what you get (Most if not all of thier sheet metal is made this way BTW). It's simple economics, doing steel tools for small volumes would not typically be cost effective.
Bottom line, if you don't have a choice buy the reproduction, they are ok but need finish work to be nice. If I were to do it again I'd find an original that's in nice shape and pay a couple hundred more to get it if I had too, it would save allot of finish and fit work and be a sturdier part to boot.