yeah, that last bit is the main part i'm worried about. anything's really possible, it just depends how much you wanna pay... :(
i realise the handling would be impaired, though i'm not buying the car for it to be an amazing handler (i've heard that the older yankee cars go fast in a straight line, but aren't so quick to turn or stop!), if it means i save money on repairing cracked spoilers, pipes, etc, then i'm all for it.
i might do some asking around and see if anyone i know has any ideas about airbags, see if i can find a mate of a mate that can hellp out :)