Yes it will fit fine, I have a 1999 T plate.
Fitted with a 2002 Tommi makinen E.C.U from a stolen recoverd in Ireland.
If its the Blitz dont bother im after a Power engineering one. There supposed to be FANTASTIC. Real power and drivability increase and are undetectable from original in every way unlike any other e.C.U if your bothered for warranty etc.