well, the thing is if u dont really understand what u need to replace a crank for, u shouldnt do it, but i guess thats why ur here, haha. i replace the crank on my 00 civic with the unorthrodox ultra ss one, and it seem to be working fine as long as u take it to a professional because theres no way in hell, u can pull that pulley bolt at home. believe me, i tried it, even with an air compressor. i say replace the crank is only good if u got a supercharger