Steven Bunband

Hey everyone.. My car has been driving very good till it started sputtering around 2000rpm. Happens about 70-80% of the time while driving. I've done my timing belt, tensioner, alternator, rotor (dizzy) cap, spark plugs, water pump and head gasket during the process. Did all of that and it still sputters! Frustrated. A lot of people is telling me it's my whole distributor but I don't want to buy another if that's not the problem... Please help. Thanx.