Yea I use one all the time no probs
I use one of the ports for this mounted on my screen permanently: http://www.vi-performance.com/
I find it's a great bit of kit.
They will do anything you want, shape, sound, bore, steel, titanium, manifold, Ypipe, mid pipes, rear box, true dual literally anything, they are total experts. Have a look on their website at some of the work they have done, it's amazing
I can also recommend JP exhausts. They made a full system copy of my knackered HKS Superdrager for my FTO which was way better than the HKS £400 and it lasted for something like 15 years until I scrapped the car due to rust issues! Was gonna get them to make a custom for my Zed but happened on a really good deal from Topgear Tuning in Bridport which I can't fault.