Exhaust differnces?

[Comedywizard]

Hi,

Is there any difference between the exhaust system for a manual over an auto box setup?

If there is I can only imagine it would be front pipe for clearance perhaps?

I know the cr petrol engines have a centre silencer whereas the dci diesel doesnt. As the back boxes are all the same, could I therefore bolt on a dci mid section and back box to a petrol, thereby removing the middle silencer?

Just thinking if it is a straight direct fit then could flow a tad better.

Any one done direct comparison?

Thanks