I used a large hydraulic press at work to do this. I was amazed at how much force was needed. Something like 10 -12 tons. If you can't get it out with a hammer let me know. I can bring it to work and get it out for you.

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81 300D Turbo 190K sold
83 300sd 319K best $500 I ever spent-daily driverw/ 2 tank WVO set up