I have a turbo back decat Cobra sport trackday exhaust fitted to my 02 Sti uk.I have the original downpipe inc cats which I want to fit back onto car.Does anyone know if the Cobra exhaust will fit onto the original downpipe as in cat back?Cheers for any help.

 

So long as they're all new age parts, your Cobra centre section and back box should fit okay

 

Cheers

 

Depends on the sizes. Is the Cobra a 3" right to the flange? Stock system is 2.5".