Just a word of caution, be careful with the old airbag units, if dual stage (which I suspect they are) then although deployed they may still be live if its only stage 1 which has fired, so treat them as you would an none deployed airbag - in addition to this you cannot dispose of them in the bin, you'll need to take them to the tip to be disposed of as hazardous waste.
Wow never knew that! I think the gp has those staged things. Tbh with everything I disconnect the battery for 30mins minimum. Didn't know they where hazardous waste either!