So I wanna do a k24/k20 and I'm pretty sure I need tsx pistons for it to work with k20z1 head. Honda asked me witch pistons do I need? A set or B set. There 20$ in price difference anyone now the difference? 87 and 87.5 maybe? Also are all k24 rods have 23 mm wrist pin diameters? Don't wanna go forged if I don't have to? No I'm not switching blocks. So don't tell me to switch to a a2 or a4