J's is mega cool. Super JDM points and pritty bloody light system. But for the likes off a K20 even as N/A would be benificial to get a custom 3". Especialy as your boosted.
Get rid of it, the difference in a 2.36 & 3" on a rotrex k-swap will be huge, dont mind the brand, get it welded back to b series length, and sell it to some jdm fanboy for big money