new rocker arms?

i want to get new rocker arms for my 1996 and am not sure what to get or the amount of work involved in these new engines do they need to be adjusted i just dont know any help will be greatly appreacated

The easiest way to check is to remove one of your valve covers. The adjustable studs are pressed in (round at the bottom) The non adjustable are screwed in ( hexed at the bottom ) this is the bottom of the stud where it enters the head. This is only for the original factory studs!