They have extra cooling fans, extra ventilation on the rear bodywork, new air filtration system, new radiator, hydraulic auto reversing engine fan (rather than belt driven), allows vehicle to operate at temperatures 10 degree C higher than a normal MFV2.
Added by Peter Mitrovitch on 24 June 2011.
The above MFV2 is no more, it caught FIRE!!!! while being driven from RAF Northolt to RAF Lyneham, blocking the M4 motorway yesterday, 28/7/11
Thanks.
Added by Monkey Boy The 3rd on 22 June 2011.