Local exhaust place want £460 just to supply so Christ knows what I’m gonna do now hopefully one of the other garages are happy enough to fit if I supply.
If you're worried about blocked cat, you can always take it off and then see if you can ram sonething flexible like a hose-pipe up there and break it up enough to pop it out. Not ideal as the rngine will have been designed to work with a certain amount of back-pressure. If it is broken then you'll hear it if you shake it about. If nothing is moving in there then maybe just leave it alone.