16th week of 97 at a guess...cars of that age won't have had anything to do with M-Sport apart from a few Customer cars built by Malcolm for himself and the likes of Steven Finlay, Brian Bell, Eamon Boland...the contract didn't get signed til late 97/98 IIRC when they were already switching to Focus...the only real development done at M-Sport was the Xtrac revisions to the drivetrain everything else was pretty much as per the Boreham spec..Malcolm then sold the X-Trac licence to Dewitts which is why as far as I can remember you can only buy parts for that box from Dewitts...