As an update. Mr Exhaust man 2 has had a look and for more money will change the headers to equal lengths, change the link pipe, collector and route to the same silencer but for more money than I am prepared for.
Think I will be scouring EBay for a 2 into 2 system. If anyone has any bits please let me know. Will be looking for complete headers (perfer 2 into 2), link pipes and high exiting cans.
Alternatively if anyone has any good suggestions for a full system please let me know.
Cheers
Mark