Funny how VW in Germany in the same time period (well from the 50's at least) picked their rods to fit within 8 grams of each other, if one was heavier, it was rejected and put in a pile of "next weight group" with other heavy rods. You saw three different weight group rods produced through the years and it is even noted in most decent manuals.
I match mine to within 1 gram, and caps to each other and big ends to each other. Then wrist pins and pistons, if I have a "heavy" piston, it is sometimes easier to remove metal from inside the wrist pin at the end, than it is to reduce the weight of a piston. You don't need to shave nearly as much steel compared to aluminum.
The end result is not only matched weights, but matched centers of weight (If that is how you call it) on the length of the rod/piston assembly.
Haven't checked my Nova rods, maybe I did when I first had them out and replaced the pistons, pretty sure I did.
