I am using 205 pistons in my gen1 3SGTE Paid $182 for the set from Toyota ( Trade Price ) I am also using a 205 metal head gasket from Toyota $98 Trade , Running 26 psi boost and making 272RWKW and have also run up to 35 psi on these pistons , I have run 40psi but the head lifts at that boost and pushes a bit of water out .