All parts are new.
Samberg 8.8 Ford Explorer differential mounting kit for the FD. Very beefy mount and diff cover/hanger, includes rubber front diff mounts and required hardware . $950 shipped.
Driveshaft shop (MZFD56-E) upgraded axles with upgraded outer hubs. These are serious axles that will handle anything you throw at them. $2700 shipped.
Only thing I would trade for + cash on my end is a FD 13brew short or long block + transmission.