You don't need to remove this nut or flange to do the brakes on your
'88.  Just back off the shoes a little with a short or right angle
screwdriver in the hole in the backing plate and remove the drum from
the flange.  It is a little tighter, but easily doable.

The only time you need to remove this nut is to service the bearings,
and I just rent a 3/4" drive electric impact wrench and socket (measure
the nut for the inch equivalent socket).  Makes short work out of this
and costs about $25.  I started doing this when even heat and a 5'
breaker bar wouldn't bust one of these loose because the tire absorbs so
much of the impact.

--
Stuart MacMillan
Seattle

'84 Vanagon Westfalia
'65 MGB (Driven since 1969)
'74 MGB GT (Restoring)

Assisting on Restoration:
'72 MGB GT (Daughter's)
'64 MGB (Son's)

Parts cars:
'68 & '73 MGB, '67 MGB GT