i agree with vag landy more often than not the rad looks good until you take it out and see its fubar'd, classic symtoms buddy get it before it gets your cylinder head gasket, also if its one of the brass radaitors get it recored cos the plastic ones only last a year or so, before they crack and you'l reuse your original,
the brass ones were always better, might be worth your while trying to get a loaner from someone on the forum whilst you get yours recored might save you some money,,