Swap That You Never Imagined: Mercedes W123 on Pagani 7.3 L V12 Engine

When this Mercedes W123 rolled out of the factory it was powered by a 2.8 L M110 inline-six engine but recently this crafty owner decided to increase the cylinder count and displacement of the engine in his wagon by more than double. So the owner found a rare 7.3 L AMG M120 V12 and automatic transmission sourced from a Mercedes S73 W140. The engine produces 558 horsepower and over 720 Nm (531 lb-ft) of torque. These are the same engines Pagani used in several Zonda models. You can see the engine is taking up every inch the engine bay has.

Here is the real life video after the swap!

 

Source: Drive2.Ru