Come to think of it though, the "first impression" of the shapes, lines and proportions of car models is my primary requirement. Of course, the easiest way for a manufacturer to capture that first-impression is through scale-fidelity. This is what I was trying to get across in my Kit Bashing - The Art of Rivet Counting thread. The kit manufacturer must get the primary shape of the car correct. If that is wrong nothing else really matters. The nut and bolts discrepancies is where the "rivet counting" comes in IMHO.