It's bit tricky getting under the car right now, (suffering a bad back) perhaps next week. If it helps though, The total length of the 3" x 2" silencer and jetex Y piece that I installed was about 780mm. I had a stainless hanger bracket welded to the silencer and had to use reduction pieces to fit the 1 1/2" link pipes into the 1 3/4 Y piece outlets.
Sound wise, Just last weekend I was followed to the next lights by a local car aficionado who wanted to know what engine I had in the car. He couldn't quite believe it was only a 2 litre and asked me what turbo I was running. 'Sounds sweet' wer