Hello boys and girls I`m otmsp (new here).Just needed to know the difference between a b16a2 and a d16z6 bottom end.I understand one shoc and the other is dohc but I need to what changes in the bottom end.Is the compretiothe same?.Are the rods and pistons stronger in the b16a2? I`d appreciate if anyone could help out on this? thanx otmsp..