Well I am going to do all the cleanup myself and assemble them. So in the end it will still be several hundred dollars cheaper than if I had gotten the AFR's like I had planned originally. Now for someone who doesn't want to do the work themselves and pays someone else to do it, their probably better off just buying a set ready to go. These heads don't really need any material removed, just the ports and bowls smoothed out. It will take some time, probably a few hours to clean up the ports and bowls. But it's either I do it and save the money for something else or pay someone else to do it.Ya, plus how much is one gonna have to spend to make them all good to go? Obviously its better than say a set of iron GT40s, but by the time you are done how much would you have into them?