I also have an Aussie in the front. Works flawlessly, never hear any
noise out of it. Put your first locker in the front, and as you can
afford it, get Ford 8.8 rear end installed (with posi-lock) then add
electric locker to it as you can afford it. Do not waste a nickel on
add-ons to your stock d-35 rear end.
I know a lot of guys preach only ARB lockers, but unless you want
to spend over a thousand front and rear each , go with Auburn Ected
electric lockers on the rear for half the price. Mine has been on for
two years without fail on many wheeling trips. Locked is locked.