if i take my car to get 410 gearing are they going to match the speedometer with the new gearing or am i gunna have to live with it or fix it myself?
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You'll need a tuner. They usually try to sell you something like an XCal 2. It will take the tech about 1 minute with a tuner to adjust the speedo. I don't think you need to spring for something like the XCal2 but you can use it later for custom tunes. I believe there are units out there specifically for speedo adjustments.

 

3.90 gears ftw!

 

You can get a speedcal gear thingy or a tuner and change the gear ratio. I would get a tuner you can upload a tune to your car and get a couple more horses as well as change certain perameters.