Get a can of CRC Mass Airflow Sensor cleaner and spray the **** out of the little wires in your MAF. It's old enough to be plenty dirty. If you put an oil-soaked filter on it, some of the oil will get sucked in and coat your sensor. Also, while you're in there, see if the throttle body is all gummed up.

Other things:
Fresh fuel filter
Fresh stock heat range spark plugs
Fresh spark plug wires