I've recently brought a Haywood and Scott decat centre, I currently have a japspeed sports cat and cat back system, now I lined it up by eye under the car and seems the japspeed centre section is longer

My question is does anybody know the measurement of the japspeed centre section as my Haywood and Scott centre is around 50"inches

You can see in the picture the 2 are different any ideas ?

Japspeed bax box and centre section


Haywood and Scott centre

 

Mistake it's not a Haywood and Scott centre but is a decat centre and come of a blob Sti so thought it would fit my blob wrx