Hose and pipe clamps

[RichD1]

Did Porsche fit jubilee clips to the hoses and pipes around the top of the engine? If not what type of clamp should they be?

Also were all the clamps, bolts and screws plated in zinc and yellow passivation?

I assume that the crimped type is original but the ones on the assembly look stainless where a couple of the others are zinc and yellow. The screw type in the centre are original as there are four large version which hold the manifold halfs together and around the ITB.

Edited February 10, 2022 by RichD1