Heres some links to earlier discussions...
Street Terra Rockers
Roller Rocker Part Numbers
To do your cam/ rocker change you will need new springs,retainers,keepers,(may as well do valve stem seals),timing set,cam change gaskets such as timing cover,intake gaskets,ect...you may even need longer push rods.
And you will need paitience!
Or you could just do the 1.72 rocker change for now with out having to change the springs etc, and it's heaps easier...