I wouldn't necesarily trust the forums. I would talk with the people that actually do this work and know what they are talking about. We need Carl Beck, Geezer and HLS30 to provide their opinions here as well. And please add my L20 and my BMW M52 to the list of engines built by Diseazd. I can't imagine why anyone wouldn't replace the rockers at minimum with remans. It's only $200!!!! I agree with my dad as well as Rebello, Wolf Creek, Z doc, Riley Curtis at Lynchburg Nissan and the countless others who will tell you that you should absolutely replace the rockers with new ones when changing your cam. Hell call Isky and ask them..... I also don't understand how you say you "know rockers are not a must" If you knew that with 100% certainty than how can you ask what is needed with the swap? You are also contradicting your own previous post #25 with that claim. You claim in post #1 you don't want to go through all the trouble to be dissapointed. Do it once and do it right. And while we wait, read this taken from http://datsunzgarage.com/ ROCKERS and LASH PADS I couldn’t believe it, but luckily every one of my lash pads’ wipe patterns lined up fine. Even after shimming up .080 with the .080 longer valves, the wipe patterns were fine. Some were biased slightly towards the valve end (more lift), but they were still positioned on the rocker OK. Keep in mind that you will need new rockers arms. Even the slightest change in wipe pattern from this mod will cause damage if you reuse the old rocker arms. In June of 2003 I rebuilt my shaved P90 a second time and added a new cam, rocker arms and lash pads. The engine went from standard mild Z clicking to nearly silent now. I suspect the worn lash pads were causing a bit of noise. I now feel lash pads should be replaced on any new head rebuild. They may look ok, but they wear like anything else, and can add slop into the valvetrain and increase noise. Go to Motorsport Auto or Black Dragon Auto and buy "Modifying Nissan OHC engines", by Frank Honsowetz. Review the section in it about measuring and adjusting your lash pads. While I was lucky, having all this machine work done can leave the valve height a little weird. And if the wipe pattern is off you can destroy your cam! Don't underestimate the lash pads!