Just dont buy the stock style one from Pac brake. All the ones listed for your application replace the back of your turbo. At some point you will want to upgrade turbos and your exhaust brake will no longer work unless you run a HX35/40 hybrid. Either upgrade to an HX40 flanged turbo now or do what was mentioned earlier and buy one that mounts in the exhaust pipe. Only drawback is this style will take a little longer to generate back presure but will allow you to go with any turbo you like later on.
08 5500 4x4 G56 4.44s, SB 3250 dual disc, XRT... Spicer 7041 Aux trans.
95 2500 4x4 G56 180 pump, injectors, 362/475 twins and more....