There are kits to remove exo's, but they don't remove everything you put in. It's hard to explain when I'm not looking at it on my playstation. But it's the tab right next to salvage. The best stuff right now is dropped in new Lantern missions, but if you're buying, go to Raxx (i think it's spelled differently). It's in the center of the HOD, right next to the Toyman crap. There's a vendor in there that sells good stuff (the best you can buy right now, I believe).
You probably already know all of this, but allow an old man to feel helpful.