ANSWERS: 2
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Not sure what exactly your tuning nor how extensive the mods are, but a quick google turned up this place being a top-notch shop for dyno tuning musclecars - Performance by Joe (314) 781-3135 3443 Hampton Ave, St Louis, MO 63139 I have no affiliation with them nor do I know if they do imports if that's what you're looking for.
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Here's an import tuner shop in St Louis: Lightspeed Motorsport 8314 Olive Blvd University, MO 63132 Telephone: 314 432-5221 Fax: 314 432-7232 Again, I have no affiliation w/ them but they sponsor a prelude owners forum and seem to have been around a while (since 1997).
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