Yeah mate that's straight from the Turbo back including a decat! Most CT9 decats are 2.25" and he can do 2.5" good for 250bhp+! I'm sure it would be no trouble for him to weld an attachment for the sensor plug! And no I don't think you need a Cat, some people say the 96> models do, but the engine never existed in UK spec cars so you'll only need a basic idle test ;)