B18B For the bottom end, people suggest using B16 p30 pistons. It pretty cheap and is said to have a pretty cool compression ratio. What is the compression ratio with p30 pistons in a LS? As for the head, I was thinking either a B16 VTEC head w/ V-AFC or Crower stage 2 cams & valvetrain w/ chipped ECU. Both of these options cost about the same. The VTEC head would require machining and the install on the cams & valvetrain would take a while. They both give about the same amount of power. I am also going to be using ARP rod bolts so I can rev a little higher. What do you guys suggest? to VTEC, or not to VTEC?