Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

aryt guys an gals
am looking for some advice
i have recently bought a sportex 2 piece cat back system
for my 98 1.4 8v corsa b
and i was wondering if i still needed to use the standard cat to be mot legal
cheerz andy

if the car was made with a cat for an mot it has to have a cat on there im not sure if it has to be the same modal as before but i know it has to have one on there mate