Jay Impreza P1

Hi guys,
not wanting to sound dumb but can anyone tell me where the cats are on my impreza p1. Wanting to get a new downpipe and backbox.
is there two cats one in the down pipe and one in the mid section and will my car pass an mot if it only has one cat.

cheers guys

jay

teddykiller

yep 1 in centre section at join where it bolts at front and i believe other is in the down pipe, u may get away with mot if centre goes but i doubt it if u remove both