The Mosa inflator data is pretty general. How fast is the discharge? How is this regulated? Since it is a gas generated design, where are the discharge rates with ambiant temperature. I'm not an airbag engineer but there is not nearly enough to spec out the device. No mention of variable rate, as the patent claimed.
Same for the TRW device. Mentions duel state, not variable rate.
Yes, the Takata inflators are used in the 2007 Mustang as I've gotten 3 recalls for that car - 2 for the driver's bag, one for the passenger (no parts yet) My 2013 has a current recall for a Takata inflator for the driver's bag, no parts available yet.
4 inflators for the 2012-2014 Mustang - Right and left models, two different seat suppliers, Lear or Recaro seats, with different seat designs and upholstery material.. I just replaced a seat cover on my driver's seat and there is a single module in the outside bolster of the seat. It is a shaped device that I assume has a mirror image for the opposite side.
So to answer your 2 questions, I just searched for those part numbers and read the descriptions to determine right, or left, Lear or Recaro seat. Didn't need my engineering skills to answer the first question. The second question requires a bit of engineering knowledge since the seats are different, the inflator needs to change to accommodate those differences.