I have been in contact with two entities [one a company the other an enthusiast] concerning custom, less expensive, Mondial T [any mondial for that matter or any 3[0|2|4]8 series vehicle.
Price looks good, the exhaust CATs are variable or to specs, and the sound seems very nice. http://www.ferrarilife.com/forums/showthread.php?t=8664
including the above link to keep these together.
I am NOT endorsing a company nor am I trying to sell these, but I am seriously looking into one, as Gothspeed doesn't make a T and the ones I've seen are just too expensive for my needs.
I've looked into making my own, which I can probably do for about $300-800 installed with either a flowmaster or such.
btconnect.com is in the UK. Shipped to my front door in CA, USA = £850.00 and comes with their 2 1/2" diam. tips.....they look stock enough. Below are their examples of on being build, and another ready to be installed.
I have been emailing them at [email protected]