As i am going the way of the Defi, i am selling my Autometer boost gauge to my m8 who has an MY94. As his engine is slightly different to mine, he requires one of them T pieces to fit the boost gauge pipe. Where would he aquire one of these?

 

Have you tried Halfords (sorry for the bad language)
Washer jet hose T piece should do it

 

I hadn't realised it was just a common piece, as opposed to specialist boos part

Cheers.