Two hours, including diagnosis, installation of new part, and bleeding
the system. I'd seriously consider having him do the master too, this
should add an hour, maybe two if he does it right and cleans out the
reservoir.  They both have similar life spans but the master tends to
last somewhat longer since it is protected inside the vehicle.
--
Stuart MacMillan
Seattle

'84 Vanagon Westfalia w/2.1
'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