Going back to stock, parts from my 2009 WRX Wagon:
Cobb Cat Back Exhaust: $640
Cobb Catted Downpipe: $480
Cobb SS Heat Shield: $50
Take all turboback and heat shield together for $1100
The CBE is a single exit and will fit the 2008+ wagon... can probably be made to fit the sedans too I believe, but will take work. Effortless bolt on to the 2008+ wagon. Excellent subdued sound, great quality, looks very nice. Cobb discontinued this CBE for this model, not sure why - it's by far the best sounding CBE on this car (in my opinion!). "Stock style" flange, i.e. requires adapter to fit to flat-flange 3" downpipe. Bolts directly to stock downpipe with no extra parts. Bolts directly to Cobb DP with no extra parts.
The DP should fit 2008-2010, maybe even later models? Both wagon and sedan. Bellmouth, catted, bung for wideband O2 (currently plugged, includes bolt).
Heat shield will fit 2009+ (not 2008), no cutting/mangling/bending required - just direct bolt on with new DP.
I am located in Mercer County, NJ and work in Freehold, NJ. I also frequently travel (twice a month at least) to Stamford, CT so I can meet anywhere near my home/work, or anywhere along the Garden State Parkway in NJ to the Thruway/Tappan Zee in NY to the Merrit Parkway/Hutchinson Parkway in CT!
Send me a message if you're interested and let's see if we can make a deal! I really love these parts, Cobb makes some excellent stuff and the fitment was outstanding. Really simple to install and makes such a huge difference in the performance. Not to mention gas mileage - I was routinely getting 31-33 mpg on the highways cruising at 65 mph!