I am into older Maserati's. Own a couple of them. I do a lot of manufacturing myself. 3d printing, cncing. The problem is that whenever I design a replacement panel, wishbones or various other stuff and try to sell them commercialy I will get sued by the original Maserati company. On a low scale it's fine, but you will never get a living out of it. The only parts which are in a gray area are rims, exhausts, filters, springs and couple of other parts.