I have an aluminum Mark VIII housing in my 'bird with an Auburn diff and 3.55 gears. In general anything that fits a regular 8.8 fits the Mark VIII housing. You'll just want to get a center section that is made for an IRS since the clips that hold the axles are different from a straight axle 8.8 diff.
Also, the aluminum cases are a little more difficult to setup for pinion depth and backlash settings. So if you don't know how to set one up, be sure and pay someone who does!