08-10 coilovers and shocks for WRX are interchangeable. STI fronts are different.
11+ has the widebody so they aren't exactly the same, but they fit. Putting 08-10 style shocks/coilovers on an 11 will get you a bunch more negative camber (which can be a good thing). Going the other direction you end up with a lot less negative camber.
FWIW you can do better than that for that much cash.