8.8 Master Housing Dimension?

Does any body know what the Master Housing Dimension is for an 8.8 in Rear end? My Proform Pinion Depth Tool came with a list of MHD’s and it said 4.420. I have read two other online sources that say the MHD for an 8.8 is 4.419 or 4.415?? This .001-.005 would matter when shimming a pinion. Does anybody know what the Ford manual says?

Well I e-mailed Currie, Richmond and Mark Williams Enterprises (Three Huge Rear End/Gear Companies) and they all said that the MHD for the Ford 8.8 is 4.415. So now I have to call Pro Form and ask them why they put 4.420 on their directions.

Does anybody know anything about this topic??