Exhaust system, belt locks - Toyota Camry, 1.8 L, 1998

I already wrote about replacing the timing here:
www.drive2.ru/cars/toyota…urnal/4062246863888317171

and about the fact that after replacing the move screams like a victim.
today I returned to them at the service station, waited an hour and a half, the result - the collector gasket "most likely" burned out.

They are not particularly involved in this, therefore, they turned to another service where the ZCh would give them a lift and they would do everything, turnkey, in short, they promised to call tomorrow.

while I was waiting in line today, climbed in the back seat and this is what I found there

the left rear passenger's seat belt buckle turns out to have a twin brother!

voila, and the Siamese twin was born

but the family is not without its black sheep, it turned out that the lock was not working, as can be seen in the next photo (on the left is a worker, that in the slot you can see platinum with slots, on the right, in the slot it is empty), and I don’t have a third belt in the back.

can someone tell you how it (central belt) is attached there and where to get it?

otherwise if there are 3 people behind, the one in the middle risks breaking his spine flying out through the frontal =)