The picture was taken on October 7, 2008 and the car probably is 2004-5 BUT how do you know it has company fitted CNG??? As far as I can see the whole behind of the car is blown up to a gazillion pieces.
I highly doubt it had a company fitted CNG, let alone faber.
All company fitted/faber cylinder are equipped with burst-discs. No matter how old the cylinder is it will not blow! WHY? because of the burst-disc...A cheap Chinese cylinder might not have a burst-disc
If you have a genuine cylinder from a know company it will last you <S>at-least your life time</S>.... and even after that it would not explode... it only will LEAK....
Edit: untrue sentence striked out