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It can be difficult. There's a brass retrofit drain plug in the Ford inventory from the 4.5 in the LCF that works on the HFCM used with the 6.0
Part number is 6E7Z-9C082-A
List is about $16.00
It sticks out past the surface about a half inch, has a knurled edge and can be opened by hand provided you don't over tighten it on install. Before buying one make sure you have the clearance for it.
It seals with an O ring and should only be hand tightened. Works like a charm and by design wicks the fluid staight down instead of down the frame rail.