Spend the $200 on the JJR bellmouth dump/front pipe.. change it yourself and you should notice right away a change in how the car feels, obviously dont go too nuts until you get a retune.. if you cant afford the $200 for a dump pipe sell the car before a coilpack lets go (im kidding) but seriously for the money they are a great bit of kit but your exhaust might sit a little lower if its anything like mine and need to be tucked up a bit at an exhaust shop.
I run a blitz turnflow cooler and have also lent it out for a few tunes and they handled 280rwkw on a rb25 just fine, my guess is that they are a better design than the JJR ones and do a better cooling job so therefore colder air = smaller area and more power from cooler intake charge.. Im still running a standard hypergear highflow and pumping out 250rwkw all day everyday at 16-17psi flat with 10:1 comp on BP98..
Will be seeing how this turbo goes on e85 before i consider either a GTX3071/3076 or go the way of a G3