$50 Craigslist 360 EXTREME budget rebuild??

I'll say it again (sorry to drag this on, J par): There is a level of contact pressure the requires certain levels of ZDDP to survive, and lower pressures require less ZDDP to survive. The whole reason is explained in this research paper summary; higher stress exerted on the surfaces requires more ZDDP to form an adequate stess-spreading layer.
Penn and ExxonMobil Researchers Address Long-standing Mysteries Behind Anti-wear Motor Oil Additive

Additionally, the 'pre-ZDDP' era cams and lifters with the older light springs and low lifts and mild cam ramps (50's and earlier) survived just fine with little to no ZDDP, and there are plenty of 60's-70's-80's era engines with stock stuff out there still running around. The ZDDP levels in the lighter weight oils are still greater than 50% of the ZDDP levels that there were before the recent EPA mandated reductions so it is not like there will be NO ZDDP in the oil used.

J Par has this in as good a perspective as anyone can at our level, IMHO. Whether he is above or below the level of ZDDP needed for his engine's lower lifter-to-cam pressure is TBD; let the man find out. If a lobe goes, there are other possible reasons, so even if that happens, anyone who jumps up with the "I told you so" reply is just guessing. I am hoping that it is alright just as a data point of the ZDDP levels needed so everyone can add that into their experience. J Par, if you wouldn't mind keeping track of the oils used, then that would be good data to have.

Too much ZDDP has been documented to cause its own set of problems ('micro-pitting' per the research... whatever that is!) so just dumping additives in is not a cure-all either.