Hello, I wonder if anyone could help me?

I have a Ford Focus W reg (2001). I bought it as a salvage car, 2 months old and did it up but I never replaced the air bag, steering wheel & seat belt tensioners. The ripped steering wheel is currently stuffed with rags and superglued down!

I have all the replacement items from another Focus and wanted to know, if I plugged them into my Focus, including the new seat belt tensioners, would they be ok or would it blow the new air bags?

Many Thanks