Roller Rocker install questions. (long)

[chris91LX]

I have a 91 LX with stock heads, valve covers have never been off, and I want to throw on some rockers I've had around for a while. I have Comp Cams 1.6 roller rockers, studs, guide plates and pushrods out of a set of 351 heads. Is this an easy swap, ie unbolting the old rockers and tightening down the new or are there some devils in the details? Anyway, heres a couple questions about the rockers:
1. Are the stock rockers pedestal mount or stud mount, if they are stud mount are they pressed in or threaded?
2. Exactly what do I need for the install, parts wise, besides the rockers and the studs?
Any help is greatly appreciated guys. Thanks in advance.

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91 LX 5.0
Z t-5, 3:73 gear, Vortech 73mm Mass Air, Accufab 65mm TB, BBK underdrives, Crane HI-6S Ignition, BBK unequal length headers, Bassani x pipe, 2.5" Dynomax Super Turbo cat back, Kenny Brown Super Subs, Factory Five Control Arms, Mac cold air kit and more to come!