Exhaust Cat Fitting

[Bill UK]

Not sure if anyone can help with this one, I removed the exhaust when pulling the engine out some time ago. Refitted the engine and exhaust but I now have a lot of vibration from the centre part of the exhaust pipe, so much so the 2nd cat knocks on the heat shield bolt attached to the underside of the tranny tunnel. This weekend I will be removing the exhaust and checking all the rubber hangers/brackets holding the exhaust to the body. My question is; does anyone know which way up and which way round the 2nd cat should be fitted, looking at the photo, is the front to the right and should the heat shield seen attached to the cat face the underside of the body. Ignore the second pipe in the photo, that’s just a standard test pipe.