I haven't followed all the discussion, but there's some chatter about the timing chain perhaps being off. Can't you test for that scenario? Rotate engine to get piston #1 to TDC (first remove plugs, but keep them connected & grounded). The distributor should now be in position to fire plug #1. Do you see that plug spark? Do you see the other plugs spark in the correct order? You should be able to rotate the engine by putting a wrench on the crank pulley. Make sure you turn it the correct direction. Perhaps clockwise when looking from front.
