Yes thats how the M119s sound if you make a good exhaust. I knew from the beginning of the vid when the car moves away from the cameraman that this is a M119. To many Videos of different made 500E exhaust heard, they all have something distinctive.
Listen to Svooks 500E RB exhaust, it sounds very similar in the lower tone frequencies:
[video=youtube;fuelRJNG9CE]http://www.youtube.com/watch?v=fuelRJNG9CE[/video]