Fortunately, the 3rd gen Eclipse is also known as the "Galant Coupe" so the chasis should be compatible for your I4. Suspension components, engine stuff (including forced induction), and certain exhaust system should mount right since it's the base model. In fact, it's even possible to do a maual tranny swap on those suckas. Make sure it's the 2000-2004 model. Good luck.
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