We have a select few engine blocks and heads that are not complete, and have not yet machined to build.  We do not buy, stock, or deal with cores, as these are leftovers from when we did stock some cores for our builds.  If you do not see it here, we do not have it in stock.  This is our liquidation pile, which are available for visual inspection and pickup upon request.   Most block have been hot tanked, and shot blasted.  All blocks include mains from original block, and are considered "rebuildable" after finish machining ( Decking / Honing).  When these are gone, they are gone, and most likely have one in stock.