It has been about 3 years now since General Dynamics purchased General Motors Defence, in London, Ontario, Canada. Only a few years previous to that GMD had purchased MOWAG, the Swiss company that had designed the Piranha series of wheeled armoured vehicles. GMD had been building the vehicles under license in North America since the mid-70's.
All of the customers get a slightly different vehicle than everybody else.
The early LAVs had a Detroit Diesel V-6 and were capable swimmers, while the most current units have a Caterpillar I-6 and deep ford. Just like myself, as the years go by the weight increases - payload and ballistic protection for the LAV, cheeseburgers for me.
Stewart