I've read in the popular hot rodding that the stock rocker arms are pretty good. Here is a direct quote from the article on their 318 build:
"While the OEM valvetrain is non-adjustable, and looks as low-tech as it gets, it is extraordinarily lightweight, and being a shaft system, it's as stable as it comes. With a hydraulic cam, the ugly stock stuff will out-rpm virtually anything from the aftermarket."
Now how true this statement is, I don't know....If that's the case, then why "upgrade" to adjustable roller rockers...??
