EQ318B Magnum heads discontinued ?

that 1st set of EQ heads I bought went onto an 83 318 short block in a D250. Original short block as that truck was built. I assembled those myself from leftover parts I accumulated from a couple sets of cracked original Magnum heads. that set I was by far the happiest with of the 3 sets, also the 1st of the 3 sets, that set was bought back around 2010. the oens that stuck a valve were fall '16, the Ramcharger heads were bought somewhere in between but closer to when the 3rd set was bought than when I bought that original set that went on the LA 318 short block. set #2 and set #3 went on 360s, set #2 an LA block, set #3 on a Magnum. converting an LA to use a Magnum head is easy.