well the sp0.05 means its oversized so been bored but i thought they were standard...wheres the best place 2 get pistons n what ratio do u reccomend?

im wanting them with the vavle cut outs.....

heard a1 rallyesport r supposed 2 b quite cheap?


is the only other way u can tell if they r low comp by measuring from the grudgeon pin 2 the top of the crown?