While I don't really like the idea, there are far worse spoilers that could be stuck on the car. Aesthetically speaking it doesn't ruin the car, although on a sedan I think it'd look a bit out of place without the JDM front end.

Anyway, you can either try and get your hands on a real ITR sedan wing, or you can buy the Wings West copy if you're not overly concerned about things like authenticity. Just be sure you don't tell anybody it's a real type-R wing. It's part number 591339L and it sells for $228.67 at NOPI. Just type in that part number in the search field in the top left of their home page, and don't worry about the picture of the hatchback on theh item page--that's just a stock photo to show what the wing looks like.

*edit* I just read through the middle portion of the thread--there's no way a Type-R spoiler, real or fake, is going to make it onto a 2nd gen.