Do you know the special tools needed to install? I know it can be done without them but I would prefer to use the correct tools
Yes the bolts are torque to yield and should be replaced. Here are your Ford part numbers:
Rear main seal: F4AZ-6701-A
Slinger: F65Z-6310-A
Housing: 6L3Z-6K301-AA
Bolts: N806155-S437
I've never seen anything stating the bolts that retain the housing are torque to yeild. Where did you find that information?