You'll need that socket and real long gear puller. Seems there was a thread on this not too long ago. Buy a socket that fits, cut the ceter out of it so that it slides over the shaft. Weld a length of tube to it and fab a 1/2" square hole to mount it to your favorite impact. For the gear puller just use some thick flat stock to make the jaws.

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Chris Ludwig
08 ITS RX7 CenDiv