Ok this is a branch off of my other post "B18B turbo build". I plan on running the following: Stock ( Rebuilt and Machined) Head with a complete valve job done Stock Block ( that has been honed and hot tanked) SRP Pistons 8.5:1 or 9.0:1...not sure yet Eagle Rods Stock ( Polished Crank) T3/T04E turbo I plan to get to the 300-350hp range RELIABLY. What I am now wondering is what Head Gasket I should go with OEM or Cometic? Please leave an informing reply. If one is better than the other IYO then please state why. If it comes down to the cometic just not being cost/gain efficient then I will just go with it because I would rather have all reliability and longevity gains possible.