Thanks to PersonaNonGrata and all other posters to follow for providing extremely helpful tips and guides! I had wondered though why this how-to was so light on pictures. Now having completed the job I see why! There is really no abillity to take photos of anything and those that are here are better than any I could have taken, so again THANKS! Job took 1.5 hours going slow and about 20min screwing around with alignment.

Now my turn to add my 2 cents:
1. I didn't have the right size Hex/Allan Key, however a Torx 25 screwdriver works a treat and was probably faster.
2. Alignment is Key, although I didn't think of it until afterwards if I have to do it again I would have traced around the original Carrier with a Sharpie/Artline texta before unscrewing anything and then matched up the new carrier to this.
3. I used a coat hanger to hold the airbag

Other than that everything else is well covered over the last 15 pages!