AMG technology pack?

[Bits G]

Does anyone know what this is?

957 AMG technology package (с 01.01.1992)
extension tube on the roof, front left

I have this as an option on my E36 and so does Simal.

Apologies if in the wrong forum!

thank you

 

[BTB 500]

Have a look here:

http://www.mbclub.co.uk/forums/showthread.php?t=19364