[Zabco]

Shapeways did indeed go under. They have recently resurfaced though under all new management and now selling the same services as before. Unfortunately all the model files they had were deleted as part of the bankruptcy and are no longer available. They do have a separate site with downloadable files called thangs.com. I just did a quick search using the work 'mack' and immediately found a Mack bulldog hood ornament. It would have to be scaled down to fit your truck, but it's an option. So you might want to give that a try and see what else is there. There are a number of similar sites today that could also be searched. Some are free to download and some are pay. Thingiverse, cults3d and printables are just a few. Good luck in your search. Look forward to seeing your build.