Re: 291 heads
Around here alot depends on what you mean by ready to bolt on, condition, etc. Fresh valve job on old parts or new valves, guides, springs, etc ? Ports been messed with or still untouched ? 2.02 or 1.94 intake valves ? With the large variety of really good aftermarket smallblock heads the last few years prices on the old double hump heads has gone down a bit. I recently bought 2 pair from a guy that need to be gone through but look to be good used virgin (unported) heads and paid $150 (for 4 heads) but that's a steal. Some classes of short track local type circle track racing have rules that require "stock" heads and don't allow bowtie or Vortec heads and those guys will pay a premium for old style "fuelie" heads if the ports haven't been messed with. Other than that someone looking for those numbers & casting dates might have an interest. By the dates they should be correct for an early 68 model and are close enough to likely be a matching pair off the same engine.