What happened to this block?

well with those grooves cut for o-ring on the deck , and it has custom alum rods showing . it had some boost added to make power , and well back to the drawing board , and some early polys shared blocks with the hemi . take the 55 301 , and some ind engines 331 354 had poly heads , dodge engines did same thing poly or hemi heads on the same block . my 55 chrysler 301 poly with 55 chrysler 331 hemi heads .

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