Trying to make these first gens safer is like trying to make your old 45 records sound as good as your MP3 player, you just can't and won't get the same results. They are what they are, drive'm and don't worry.
New vehicles also have advanced seatbelts with explosive pre-tensioners that react in concert with the SRS systems which actually tighten up around the occupant in an accident...if ya want that kind of safety, drive a newer vehicle...my .02