Ok having a hard time wording this and trying to explain my problem
I need some suggestions for a test pipe that runs a 2" inlet, and a 2.25" outlet, any advice when buying on eBay would be nice too!

There is a section between the down pipe (that runs from the header correct?)
and between the cat (the 4-5" pipe that bolts with the spring bolts)

I'm going with a 2" header/down pipe, whatever else I need from there to cat, and an Apexi WS2 60mm (I believe 2.25" inlet)
What combo should I run between the down pipe to catback.

I do not need a Smog, so I'm looking at test pipes, also any recommendations for the flexible gasket replacement would be nice, I'd assume I should replace that while I'm down there.

I don't think that the two section pipe is stock, that's why I'm having so much trouble, I believe my headers run to the cat directly
If someone could confirm!!

This is the parts catalog for my exhaust system, there is no two piece pipe listed which leads me to believe that it's a repair, this exhaust has been through hell and back! Seriously!
#7 is the section I think has been replaced/repaired previously

This is the system that is going on the vehicle. As I stated before I believe the down pipe runs to the cat, skipping the pieces I'm concerned over!

 

Have more to add in a minute.
Pre update bump?

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I am running an invidia catback (which looks real similar to the one you have in the pic) and a 4-1 ITR replica header with a 2.5" Collector. I went on ebay and found a test pipe that was 2.5 diameter on one side and 2.25 on the other and everything mated up together fine. If your header is 2" and your exhaust is 2.25 you should be able to find a test pipe with those dimensions and you should be fine and it will totally eliminate that universal looking cat that you have pictured. You may want to test fit what you have now and then measure to make sure the test pipe you order is long enough.

 

Right. I haven't test fit yet. I was gonna wait till I change my oil so I can run seafoam one last time and change my pan gasket/stem seals that way I ain't burning oil through my new exhaust. I don't wanna break nothing test fitting just do it all at once
Edit;
I have been looking around and nothing seems to be double sided. Just like the blox one that's adjustable. Might just have to go with that.
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Just bolt your header on and mount your cat back. Then measure what you need and go to an exhaust shop and have them custom make you one to your exact measurements and everything. Very simple and will be much easier than trying to mismatch a bunch of parts.

 

Yeah I got to test fit yesterday and everything bolts up, clears and fits. Now I need to get a test pipe. Those two piece down pipe pieces was a repair from before. Had me worried for nothing! I'm sure I've got it from here

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