How much does it cost to rebuild a Slant 6

Hey guys I am new to forums and was wondering how much it would cost to rebuild my 225ci slant 6. I have owned the car for a little over 9 months now and would like to rebuild it but am not to sure how I should go about the process. I would like to rebuild the motor to stop the leaks and gain some more power because a lot of horses have left the stable. I would like to do a lot of it myself but have limited tools. I am located in Atlanta Georgia. Any help or advice would be appreciated.
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