I want to upgrade my stamped steel rockers to roller rockers. Question is, do I need self-aligning rockers, or not? My understanding is that SA rockers are generally required if the head does not have guideplates (which my heads don't have). However, I've read conflicting statements regarding whether SA rockers are needed, or not. So, I've attached a pic of one of my heads below, with the pushrod and rocker removed from #8. Comments?
Cheers,
Ian.