Well if it's a kia or Hyundai
Well if it's a kia or Hyundai or some crappy cheap car then no but if it's a mustang or camaro or some cool performance car its worth money I would do it! But I wouldn't go oem!!!! I'd get a high performance crate engine or build a similar engine that makes more power then swap it, smog it illegally if I have too or set it up to pass smog then remove all the emissions systems and put it away somewhere safe for when the next smog test comes up!