Is this tool necessary for my rockers ?
 

I saw this on a web site and they are the same rockers im going to use. Would the local Chevy dealer have this and is it needed? Would these 1.6 GM rockers make me need different push rods?http://www.carcraft.com/techarticles.../photo_10.html

No, you don't need that particular tool to adjust the rockers and I don't think you would find it at a dealership.

Might be "convenient", but definitely not "necessary".