Buses are built to order, so the customer chooses from a list of available features. The aforementioned 454 big block had been discontinued by the 2011 model year, and 2000 was the last MY that engine was available in the Chevrolet Express (which would be the chassis used for a school bus). If it has a gas engine, it most likely has the 6.0. The 4.3 V6, 4.8 V8, and 5.3 V8 are other possibilities, in accordance with what the original customer specified. If it's a diesel, it'll have the 6.6 Duramax.
Depends on the model...
129 mph depending on the engine size
No
ford, chevy, or dodge?
350
Engine size
The 2011 Volvo XC90 has a 3.2 L base engine size.
The 2011 Honda Ridgeline has a 3.5 L base engine size.
The 2011 Jeep Patriot has a 2.0 L base engine size.
The 2011 GMC Canyon has a 2.9 L base engine size.
The 2011 GMC Terrain has a 2.4 L base engine size.
The 2011 Volkswagen Eos has a 2.0 L base engine size.