roller rocker arms

I'm about to install my roller rocker arms and I wanted to know if I can use the. Fasteners that hold the stock rocker arms? And they say replace the pushrods. But they all look in great shape. Not many miles on this motor. Any suggestions??

You have to use socket head cap screws, as the heads on the stock bolts are too big and they are much to short in length also. You typically need longer pushrods when using roller rockers, Chevy LT1 pushrods normally are the correct length. Search on here as you will find your answer.