Well Lexx young man went down to AAS as you suggested and your right Stuart is a fine and knowledgeable guy who has carried out far more complex work, so the old Z is well within his capabilities . He said he could tune it to be as loud or quite as I wanted and would carry out corrective actions should I not be satisfied with the end result.
He hand makes the complete system even the back box (Powerflow use an off the shelf box) and will design it to suit your requirements.
I will definitely use them when my exhaust gets near its end, which shouldn’t be to long now as its been on nearly 8 yrs now. In fact I may even get it done early. He quoted £500 for Y pipe, centre section and back box, cant be bad
Ah, and another good point is, his workshop’s just at the bottom of my estate
PS
Stuart didn’t rate the powerflow system at all (laughed when I said my feedback on them had been poor) he said he wasn’t surprised . I’d expect him to say that but he did seem to know what he was talking about.