A while back, Luigi De Virgilio and I undertook to figure out how Lancia balanced their crankshafts for the V4 engines. It took a couple of years, and a lot of work, plus deep insights and guidance from John Cundy. Needless to say, it was written up, but...its not quite good enough. Probably have to finish this up (yes...). In the meantime, here's a teaser: part of the work included 3D models of all the V4 crankshafts. And once you have the model, why not make a print?