I will post a video of the 66 running. Sounds good at 4,000 rpm with the dual Flowmaster 40's! I am gonna make a video of the 77's 496 running also soon. Thanks for all the comments! The 496 is a beast, pulls hills with full loads of would and towing a tractor at 70 mph.:lol:It is a blast to drive. - - - Updated - - - I converted to a side spare tire carrier on my 66.