icanfixall
Official GMM hand model
Rons idea is the best in this thread so far. Before you condem the 7.3 block first make sure its bad. Like I posted early on. The shop needs to be asked a few questions bout the thread cleaning in the block. Get that head off and look closely for problems with left behind head gasket material from the first set of head gaskets. A single edge razor is what cleans the heads and block of any stuck cooked on gasket material. Its surprising how little is left on the blocks that will ruin the seal.