The smaller hole one is a heat shield packed with carbon, that's why you can't get it out. The trick is to take a regular screw driver and a hammer, hit the perimeter of the heat shield all around to break the carbon bind, then use a hook to pull the heat shield out.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked