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Showing the rep power is an option - AdminCP > Settings > Options > Thread Display Options > Post Elements.

If you want them in the same box, you will need to put your code near where it is shown in the postbit. Look for "reppower"

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I don't understand your question. You turn the option on in the settings where I told you and then it shows up in the postbit. You can then add your code, that you posted in the first post, just below it in the postbit.

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