I have acquired a set of tubi test pipes. I currently have a tubi exhaust.

So I thought it would be a fun way to spend Sunday rolling around on the floor under my 355.

I have removed the CATs and when offering up the test pipes it seems they are about 20mm too short?

I can just about get the rear flange to mate up but the pinch slits in the side are open i.e exhaust will escape.

Am I missing a trick here or are they really too short?