Aluminium block

Try all of the Crapillac engines.....
Ain't no TIG'n that mess without cutting the liner all the way out 1st, good luck with a chunk missing, then it's doubtful the leftover Al-U-minimum will take the pressure of a press-fit sleeve without splitting. A one-off wet-sleeve? With no deck, uhh...no. CAN it be saved? Sure. Should it be? Only if Ya got nothin' else to spend Your $$$ on. Soak it in Evaporust, pull the dowels, bead-blast it, Gorilla Glue the chunks back together, put a glass table-top on it & call it a day......

It would honestly make a nice table.