Head Studs

[DMatt21502@aol.com]

I am finally finished with the lower end on my 1977 MGB and am getting ready 
to install the head. On an old Jag XKE that I had, there was much concern 
about reusing the studs because they went into the block through the water 
jacket 
and were generally corroded and fatigued.  The studs on my MG look to be in 
good shape but I am wondering if I am being foolish in reusing them. What would 
be the normal life expectancy of these? 
Dave Matthews