I honestly think your wasting your money installing 1.8 pistons if you are going to spray, unless you are trying to make the car faster off the bottle. If you plan to make it full bottle feed its much easier and a little safer to spray an 85shot and save 300ish bucks and a ton of labor.
If you are going to go through the trouble of tearing up the motor get some forged pistons made and do a direct 120 or higher

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