Hi Phil,
Actually I believe that the quoted measurements are for the car you are talking about.
This is the 1967 car designed for Shelby by Len Terry and not the earlier 1963/4 modified Cooper version.
The car modeled by Monogram and called a King Cobra is in reality a Cooper Monaco T61 with a Ford V8 stuffed in the back.
All the Cooper Monaco T61s*, either Climax or Ford powered, had a wheelbase of 91".
The Ford engine, being a V8, was virtually the same length as the 2.5 or 2.7 litre inline 4 cylinder Climax engine.
Details of the Cooper T61M Shelby King Cobra can be found at
Ultimate Car Page.com and is also listed in the Scrutineers Handbook under Cooper.
The dates for each of these cars in the Scrutineers Handbook also tie in correctly with the dates of the real cars.
*The one exception is the Maserati engined car which had a longer wheelbase.
Hope that helps.
Cheers.
Mick.