Depends if you have a 4 cyl or 6 cyl. If you have a 4, then it's not even remotely possible. If you have a 6, then a cold air intake and cat-back exhaust should do it. It won't sound exactly the same, but it should sound close. Once you start going into headers and downpipe, etc., it'll get more raspy. Nissan's VQ35 is a very distinguishable sound.