Airbag ecu/module location and help

Hi Guys
I'm trying to locate the airbag module. (2.0 tdi dsg)

a) Any ideas to where it is located and the easiest way to get it out?

b) Also is it safe to reset/ delete crash data?

c) will i need to replace any sensors? passenger seat airbag and passenger roof curtain airbags have been deployed.

d) should i replace airbags/sensors then fit in the airbag module and start car and will it require a softcode reset?

I have tried looking for this on previous threads but had no luck.

Thanks a million in advance!