It doesn't matter what category it is in, I just check new posts - so I would have seen this if you put it in the correct location.

Anyway - to answer your question. Your stock tips are each on their own pipe (look under your muffler). You would have to figure out some type of "y" connection to get them back on there, as well as getting the bracket installed again to hold it up. I personally bought a cheaper "dual tip" muffler and had it installed. It sounds great, with no drone. I recently went to a local autocross event and my brother said it was a very distinct sound, he knew every time I started my lap.

It was a WickedFlow brand with rectangular tips if you want to look for it.

I don't think you will have back pressure issues, there are two sets of cats on this vehicle. In fact if you do a search, I believe there are members that have removed a set of cats and the muffler without issue.