"Rookie-Touring" '69 Dart

Muad'Dib15 said
the V10 is based on the 5.9 Magnum with 2 more cylinders.

Actually this is only partially true. The truck V10 is based on the 5.9, the Viper V10 was entirely new and could in no way be considered a 5.9 with 2 more cylinders. Very common misconception though.