1979 Plymouth Trailduster Engine: 5.2L V8; without Air Conditioning; without Air Pump; without 100 Amp Alternator; without 117 Amp Alternator; Position: Power Steering;. 1979 Plymouth Trailduster Engine: 5.9L V8; without Air Conditioning; without Air Pump; without 100 Amp Alternator; without 117 Amp Alternator; Position: Power Steering;.