Working with 3D printing replacement early A-body parts
That may be, but 3D printed parts have stratified seams, inconsistent weld between layers, and 3D printed parts often require design considerations due to the nature of manufacture that makes them an apples and oranges replacement part for pieces that were originally manufactured via other methods. I'm not saying that can't be good parts, but it's rare for them match in longevity or quality.
It's like buying counterfeit stuff from China, it might LOOK the same (well, at least similar) but that doesn't mean it is the same. It doesn't mean it's a bad part, but, be aware of what you're getting into before blowing a bunch of coin.