help with finding a downpipe for T28 turbo

Hi guys, I have not long bought a mk1 vrs estate 1.8T and it had been tuned up by a monkey. Ive since taken to a turbo specialist and have done some extensive work on engine and they rolling rd it at 280bhp , however the exhuast is not good, I was advised I need to find a downpipe to fit T28 turbo, just wonderimg if anyone knows any companies I could get off the shelf ?or companies near south wales?

Cheers for your help.

james