eddy heads and what rockers to use?

Comp, cranes, factory ductile will all work more than adequate except under the most extreme conditions. You don't need adjustables or roller to run the eddy's. That's determined more by the camshaft.

Any reason you are getting the 60179 head and not the 60779? Is your engine together or apart? If apart you might want to see how the piston/deck heights are before ordering the heads.

The 60179 has a .060 machined recess for the increased compression height of the early 340 pistons.

If the piston is near zero deck or slightly out the hole, you may be better off running the 60779 with a thicker head gasket. Better quench that way.

Good luck with it.