I'm selling a set of 360 1.88 J heads. These have been cleaned and crack checked. They have 3/8" thick wall bronze guides in good shape, they have been touched up in the ports and the combustion chamber, has been polished. I got these this way but they look like good start cores as they did very little in the ports. These are bare castings. 250 plus shipping for the pair. Heads are in Des Moines, Iowa.