Not too sure about the Air Force vehicles. But the Army ones are
upgraded with new diesel engines and new transmissions.
Before this, the vehicles were prone to breakdowns, had petrol
engines and can catch fire. There are some minor improvements to
the internals, and rougher external surfaces for crews to climb
up.
The Army vehicles have a 20mm gun and 2 x 7.62mm MGs. Great for
section support fire. Not too sure how much longer the V200s will
serve either.