my name is scott and i have a 96 prelude with a h23 in it. i just have a few questions about the internals of the the h series engine. i know they make type s pistons for this h23 but is there a differnce in compression with a type s usdm or a jdm or is there even a is it just a type s piston with no specification between? i plan on doing to my car. cams stage 2 crower cams cam gears some kind of adjustable cam gears valve train upgraded valve train to suport the stage 2 cam piston type s rods eagle rods h rods or something depends on what i find for the money crank h23 stock crank computer a piggyback system still need info about that may need some questions asked.