This might get me kicked off the board, but check out the WRX. WRX Wagon if you really want to be practical. The stock suspension is a a little bit boaty, but that is a simple fix, then you want to get a bigger intercooler, perhaps a cool sounding waste gate, boost controller... But at least you do those things on your terms not when the car decides it is time to.
It is damm ugly though and some 18 year old kid will have one that is faster than yours.