No, You cannot put the High Dome Civic Type R pistons in your B18, #1 - the stroke is too long. #2 -the valve to piston clearance will be too narrow and #3 - the compression will be unstreetable. Stick with the ITR's and you'll be fine. Hope that helps.Hey, if I put in type R high compresion (11:1, stock bore) domed pistons in a B18a1 with stock head will it work? I know it won't make as much power if I just do a LS swap, but that is down the road. I'm just improving the bottem end of the engine for now till I get more money to get a (B16-B17) vtec head. Just want to know if the B18a1 head will function fine with the domed pistons.