Help getting flange off??!!

WARNING!!!! You need to access a shop manual, which is available at MyMopar for free. No I do not work there, but some of the manuals posted there came from the efforts of the guys on here

That pinon nut MUST be installed with a lot of force. You MUST come up with appropriate tools, even if home made. And some rear axles have what is known as a "compression sleeve" (it compresses and CHANGES LENGTH) on the pinion.

WHAT DOES THAT MEAN? it means that now that you have the nut off, when you put the nut back on, you can EASILY overtighten it and REDUCE BEARING RUNNING END PLAY which could/ will quickly ruin the pinion bearing.

You CAN NOT just "wrench" the nut up tight IF that axle uses a compression sleeve in the pinion setup