Yes it actually does work and it will cost you around $50 by the time you are done... I did mine with some success but I was much happier when I spent $90 at tower hobbies for the os cvr18 ... much stronger than the cen...If you decide to upgrade to the 18 conversion with the cen parts you will need and piston and sleeve, new con rod and clips... make sure your head shims are good, or get new ones.. that's what caused me the most problems... leaked like crazy.. (no compression) until I replaced them... WHole deal took less than 20 minutes.. Just break engine in as original and good to go..