I now have a full system so no longer needed.
Custom made backbox delete. Basically a straight pipe with a nice slash cut tip. Only 2 months old!!
Ideal if you want some extra grunt and warble from the V8 without being too loud or spending buckets on a custom system. It has been cut just before the welds so you would either need it welding on or sleeve it.
This is what it sounds like
https://www.youtube.com/watch?v=gR1m_ByIRlE
https://www.youtube.com/watch?v=L_4YdO7IJGQ
£100 collection from peterborough PE2. May post at buyers cost.