E34 525/24V Exhaust system

[wan520i]

Attached here with the pictures of exhaust system already chopped to 3 pieces :cry: Just need to confirm are these boxes for E34/525/24V/single vanos? :dunno: Thanks for your immediate reply... Here the front part/catalytic convertor with the sensor:

 

[wan520i]

Here the middle box:

 

[wan520i]

Here the rear box: