The diameter of those 777 engines is the same diameter as the fuselage of the 737, and the read horizontal stabilizers is also the same wing length as the 737.
The 777 is only slightly smaller than the 747 with out the iconic " 747 Hump ".
Paris Air Show, 2005 - Exclusive Photographs, Coverage
The Paris Air Show (Salon International de l'Aéronautique et de l'Espace, Paris-Le Bourget) is an international trade fair for the aerospace business. It is held at Le Bourget airport near Paris, France every odd year, alternating with the Farnborough International Exhibition and Flying Display. The next show will be held 13th June–19th June 2005.
The Paris Air Show is a commercial air show, organised by the French aerospace industry's body the Groupement des Industries Françaises Aéronautiques et Spatiales (GIFAS) whose main purpose is to demonstrate military and civilian aircraft to potential customers. It is one of the most prestigious in the world.
http://www.india-defence.com/node/279
Paris Air Show, 2005 - Exclusive Photographs, Coverage