I bought a set of T&D roller rockers from Boostin v6 a few weeks ago and they will not fit my Champion GN1 heads. They are for 8445 iron heads. I paid $375 for them and will take my money back, plus shipping' for them. Again they are NEW. See thread- boostin v6 on Sept. 11, 2010 for pics. No pay pal account so postal money order or bank draft only. Thanks, Howard.