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The short answer is no. The supercharger will bolt on to your '04 no
problem but there are a host of issues with the piggyback ECU and fuel
enrichment devices that make this unit incompatible with your engine.

If you can score a compatible ECU and the 10th injectors needed
for the '04 install you could probably make it work.

If you are successful, you will certainly enjoy the benefits of an extra
100 hp and 100 ft/lbs of torque (conservative estimate). You can
leave the stock exhaust on but TRD recommends headers and free
flow exhaust to really wake up the power - I have both and it really
makes a difference. The only thing you don't want to do is install a
cold air intake, it is not compatible with this system.

Hope this helps.

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