Yes, it gets a sunroof in Pure+ S, Aventure S, and Accomplished+ S variants.
Tata Punch gets 6-Airbags, ABS with EBD, ESP, ISOFIX child mount, and iTPMS as standard from the base variant.
Yes, it has CNG options with both MT and AMT transmissions.
319L for the Petrol variants and 210L for the CNG variants.