I'm sure someone on here done an install with a tablet. They used the keys that remove the radio and the removal slots, then bent the end tabs that stick out down/up and bonded that to a case for the tablet. Now you have a tablet case with 4 locating pins that fits over the radio and is totally...
Go to the VCDS part of the forum look for the VCDS user map and ask someone in your area if they could scan your car that way you will have a better idea of your faults before you book it in at any garage for your bending over.
The photos of the bypass cat mod
The only problem I can see is one of the studs at the flange is missing and there is a slight dent in one of the cat pipes at the weld.
Edit link updated so it works now. ******...
I don't know what the condition of the pipe is basically from what I can see its a standard cat that has been cut open the insides removed and then welded shut again. I will take pics once its removed on friday and if its any good to you then its yours.
That's the car booked in to get the decat taken off and a standard cat put back on. Then it will be running a standard cat with a middle box delete and standard rear box. Hopefully it will make it a lot quieter.