Racingjunk Forums - Need help on roller rockers on calif smog 350

I am not sure what the stud size or any specs on my chevy 350 stock rockers.Engine is bone stock with a recent rebuild.Car is a 77 impala coupe.Car from factory had a 305.The guy I bought it from droped a 350 in it with a 2 barrel carb.Has passed calif smog with no prob.My ? is which roller rockers do I buy and any idea how much to have a shop mount the rockers?Will the stock push rods be ok?I'm just trying to get all I can and still pass smog.Moving out of Calif is out of the ? at the moment.Just too much to HOT ROD a car.I may end up just building a track only car.Any help would be great.Thanks.