want to trade my aftermarket 3 inch midpipe for a aftermarket 2.5 mid pipe! if any interest, pm me! not exactly like this but similar. http://www.smb.net.au/images/subaruwrxoption2midpipe.jpg
it is pretty easy... but $20 nowadays would buy a couple of gaskets and flanges and maybe some crappy piping... no welding labor though....