Hi everyone, my friend wants me to build his 91 prelude si with the b21a1. My question is does anyone make aftermarket pistons and rods for this engine? I didnt want to custom order anything for it. I was hearing about h23 rods working but I have no idea if that is true. I have not built any of these before so I anyone knows what will work in it or where I can get parts that would be great.