Dear brother
The project vehicle is fitted with the original f/f AC that came from Dewan, don't know the exact specification but you can find it easily.
About the Duet Compressor and Multi flow condenser thing...........I recently got AC installed in my Mehran Euro II from Karachi. I was offered 3 choices, i.e.
1- New denso unit with Duet Compressor (Rs 22,000)
2- Whole new set of denso including compressor (Rs 25,000)
3- Whole new set of denso (multi flow) (Rs 41,000)