I am needing a good set of rockers for lowdeck engine that I am changing heads/cam etc on.ez-1 heads w double springs, solid cam, street strip car that is seeing mostly strip currently, I am looking for a 1.6 rocker standard offset and have decided on either hughes or harlands, I saw some Harlands on clearance for a good price but it says that they are bushed, I went to harlands site and cant find any info on them, are they discontinued, or a lesser quality than the other(roller) ones? thanks for your time guys!