Ticking noise, 383, can't locate the source

I feel like a Jonly Bonly from Boldly-go.

In my ppwk for the Comp cam, they recommend their roller rockers 1621-16, which are $700.
Everything else is the recommended Comp stuff from the ppwk I kept, just the rockers are stock.

Can I re-use the pushrods?

Any comments on these is appreciated:
COMP Cams Pro Magnum Shaft Mount Roller Rocker Arms 1621-16

Those are badass but totally unnecessary IMO. You should contact Mike at B3 and see what he recommends. He can also help you locate the rocker shafts in the right place.