I don't expect any vendors to post their CAD files but I highly doubt these are prized possessions. They are extremely basic shapes and they give away their designs to everyone who purchases them. There's no way to copyright or protect the design of a welded plate with a few holes. If I wanted to steal their design and take some of their business I would buy a set and do so without their precious 3D models. They probably only made 2D paper drawings anyway, 3D is overkill. I want to use my new PlasmaCAM to cut the pieces though and practice importing models.
What I'm referring to are the members of the forum that have stated in previous threads that they have sketched them up or have posted jpeg drawings that lack a few key dimensions. I have already sketched up the skids but I haven't gone out and measured where the mounting holes are yet. What I'm more interested in is the mounting point of the bumper to the frame that I can design a custom bumper around. Again, nothing that can't be done with a measuring tape but I hate to replicate work that has already been done, especially since I'm terrible with 3D modeling.
Bulldozerx says he has them and posted some pictures:
http://www.thenewx.org/forum/showthread.php?t=17364&highlight=cad
Eagle1007 says he has skid drawings but just posted halfassed pictures;
http://www.thenewx.org/forum/showthread.php?t=56606&highlight=skid+cad
Surely I can't be the first to model this stuff up...