Eric the pipes will work for you since you're running an S13 SR and the 2871 is a drop in so they should work as well since I have an S14 SR hotpipe so if you just want those you can have them for $150

And Mewantkouki can have the core for 150$ its not perfect but its definatly serviceable. I would run it but I got it in my head that I want the shortest charge pipes possible so I'm getting a Full Race back door set up.