Just a rough estimate but dont quote me on it
Lower estimate 100+
Higher estimate 300+
I still think that there are few Kingfisher A320 type rated pilots around who got their type rating after they got their LOI from Kingfisher.
On Another note
Jet Airways last year had given an advertisement for A320 type rated pilots for direct entry onto their A330 fleet
I believe they recruited around 50 of them