I don't believe the Mu2.7 came into play until about 2010-2011 so you should be safe with a 2005 motor in a 2004 tiburon. It will be obvious if it is the Mu2.7 because it will have a strange looking intake manifold like this one here. The Mu 2.7L long block isn't precisely the same as our Delta long block so it's not suitable for a swap necessarily. It could work... but your timing belt and water pump kit doubles in price due to the changes needed for variable cam timing. Also you have no way to control the variable cam timing with your Siemens ECU. It is not recommended to try and convert to a Mu 2.7L unless you have the tuning know how and a dedicated shop to do the conversion correctly with the Bosch ECU from the later cars. Mu 2.7L upper intake
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It's possible that they used the Delta 2.7L "V2" variable intake in 2005 so if you see this intake manifold, the whole long block will be the same. Just make sure to swap over your upper and lower intake manifolds, fuel rails and throttle body to match: Delta 2.7L V2 upper intake
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