dekweld

hi everyone i,v just got a dt 230 lanza with a sloppy bore. the piston measures up to the standard piston size of 66.752 and the average bore size is 66.815. does anybody know the size that the coulor coded pistons go up in. according to the service manual piston to bore clearence should not be much over 0.1 and is it best to get the bigger size and hone the bore to suit? any help would be great thanks. deka