need '91 seatbelts

help! my dog ate my rear shoulder belts.
I need both rear belts, and should probably
replace the front drivers belt also(it got nibbled)
Ideally, I'd like to find the original grey/blue,
but other colors may also be ok.
this is for my '91 4wd 6cyl 4runner.
ANY IDEAS for finding these would be appreciated.
e-mail me!
Thanks-Susan