Thats where i am confused.My rocker arms on the heads I have now(on the Car) dont work They are Non-Adjustable And my new heads are stud type, so I will need adjustable rocker arms and studs. What engine (size,year) do I get them for? And will my push-Rods be the same? Sorry to sound so dumb about this,but I just want to get the right stuff the first time