one sleeve or one bigger piston it will not know it has 7 .030 and 1 .040 if it will clean up at .040 i put sleeves in all the time and would be happy putting them in all day. some guys think sleeve are bad. but if done right they work geat .you can. i have saved blocks that cost more than +3000. dollars. on you hemi they are getting hard to find? more than the big block chevys and have put more than two sleeves in one block and a new crank rods pistons.and get them line bore all the time if you can get better then sell it. but do you think you can get a better engine for the money you paid for the one you have