Any info on installing tapered axles in a 64 8 3/4?

Hi, I have a 75 duster and I'm putting in a 440 with a 727 trans and the rear is a 7 1/4. I just picked up a 8 3/4 from a 64 polara with tapered axles for free. I plan on doing the conversion where you separate the drum from the hub for easier brake work. I got the axles out and plan on changing the center chunk gasket due to a leak. I can't find any info on how they go back together or what gaskets go in the housing. I tried a manual I found online but it didn't get into any detail. Any help or guidance would be greatly appreciated!

Thanks
Dan