I would be looking at lack of voltage from coil and/or lack of fuel due to weak pump when hot, possibly a crankshaft position sensor that flakes out when hot? Just my thoughts.
As for timming specs, the ignition control unit takes care of that (12 degrees BTDC ?) and there should not be a vacuum line to the distributor.
[Edited by MB Medic on 07-21-2001 at 01:16 PM]