Free solidworks models
My prof was telling me that often companies have pre-made models of their engines and or other parts that you can just download to use with your current design. This is how a stumbled upon GrabCAD in the first place and it's a great resource but I'm wondering if there's something else out there in case I can't find what I need here.
Having worked in the off road/racing market for a while I can tell you that unfortunately you won't find much. Sometimes you can find a few drawings here and there, but aftermarket car part companies do not share like that. It would certainly be nice if that did, but it is due mostly to other companies stealing designs. Are you using a standard VW front or dual A-arm? What axles are you looking for?