Sti part recognition please!
 

As per title please guys. What is the small blue pipe for and braided line with thingy on it for (I'm taking a guess at being gauge related?) Second pic - what strut brace is it please.

Attachment 45883

Attachment 45884

Blue hose has probably been boost gauge hose
Braided is oil pressure gauge fitting
Strutbrace looks like whiteline one

The sensor on the braided hose looks like it's for oil pressure, got a gauge inside? The blue one looks like it's been used for a boost gauge or something similar in the past and has been blanked off.

Cheers guys.

No gauges inside so must have had some then been removed. Handy the connectors are there though.

Another question....is there a way to tell if it's been forged or the head gaskets have been done apart from receipts / paperwork? Any tell-tale signs?

Not without stripping the engine apart no.