Just curious, anyone know the main differences between the d15 and d16 blocks/internals. For example, can d16 pistons/rods be used in a d15 block? What's the difference in bore? Any info appreciated... thanks.

 

If you want the low down on piston specs, click the link in my thread. Pretty complete D series info. As far as the rods, I am not too sure, not enough to advise anything.