Spent about 3 hours last night installing the GRP decat pipe and it was successful!! Got a chance to dive the car this morning and the sound is amazing!!! I used the exhaust pipe expander tool and the new pipe went in pretty easy. However, it was a tiny bit too long and I had to cut it to fit...Every exhaust is probably a little different.
If you are working by yourself, find something to support the muffler. It gets heavy after a while. I used a spare rim laying around the garage.
2017 Evora 400, 2006 R53 MINI Coupe, 2010 135i Convertible, 2017 F-Pace S