Please tell me what parts interchange between the 2.45/2.25 vice 2.71->up 8 1/4 axle

Notanova73 said
link for the whole thing.
Dodge Chrysler 8.25" 10 Bolt 4.10 Richmond Excel Ring Pinion Gear w/ Install Kit | eBay

Careful though. That's late model according to the application chart......that might not mean anything but I'm not sure. My knowledge gets much thinner with newer stuff. It's damned thin enough as it is. lol