Which heads to run on 340

Listen to what Brian (0U812) posted above. He knows what he's talking about in regards to the Indy/RHS heads. I bought a set from him, with the PRW roller rockers kit. Although I'm still in the mock-up/clearance checking phase, these heads with the beehive springs and the 1.6:1 roller rockers, bolted right up, and there was no issue with interference between the rocker and the spring/retainer.