but if I replace the pushrods I will have to replace the rockers as well right.
So my current pushrods and rockers will work ok with hydraulic lifters is what your saying?
Wait, let me get this straight. You have "rocker arms are factory adustables " so right there and then, your goiong to need different pushrods than what came stock. Did you know that?
The pushrods you'll need have to have a cup up top for the adjuster of the arm. Right? You knew that?
The length of the pushrod varies from a Hyd. cam to a solid cam. Did you know that?
Figure out what your doing cam wise and then order the pushrods to length. You can get a pushrod length cheacker from various sources like comp or huges.