Sports exhaust would be highly desirable, but research the market, are there suppliers other than the MMC who may have alternative offerings?
Brian
Re the sports exhaust, as Brian says, there are a number of alternatives over and above the MMC version.It might be worth talking to Rob Wells at Librands
I know he does systems for the Zetec R and Duratec but not sure about the Sigma.
In any event, he is helpful and very switched on and I've always found him happy to give advice
G