On Thu, 29 Nov 2001 16:00:37 -0700 (MST), you wrote: >Long story short? Older Viper with dual exhaust; IE, 2 >5cyls in one.... The tank I drove when I was in the army, had a Daimler-Benz 37.4 litre V10 diesel engine.. And if you listened on one side only (one exhaust pipe on each side), it sounded a lot like a 5-cyl.. :-) -- Regards, ES