I have owned both now and cant tell you the 330 has better brakes so it will cost you more in maintenance then a 325 with smaller brakes. Some 330's like the xi come staggered and have larger back wheels which can be an additional cost but running 225s all around should be fine in either choice of car. You do have silver gauge rings in your cluster in the 330 which is some nice eye candy that gives the car a newer more expensive look but you can buy those rings and put them into the 325 if you really wanted too. There is some gas savings in the 325 but not much .. all depends on how you drive but I would recommend chipping the car and getting an air intake for some better power and mileage.
-=[ BL/\DES ]=-
All it takes is one bad day to reduce the sanest man alive to lunacy. Thats how far the world is from where i am. just one bad day. - Unknown