.crispy

Either gear diff will fit either car.

Here's how I resolved the friction problem when the screws are fully tightened.

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Wait for it...
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I didn't tighten them fully.

For realz...

That and I mix and match the bushings. One white, one black. Or I sand down one bushing.

BTW, the flanges should be on the outside of the mount and will not touch the bearing inside the center pulley.