>I've thought about replacing the exhaust system on my 85 GL, but I have a
>strong feeling some of the bolts in the head are going to break off.
>Is this what happens to most everyone that tries it?  I have Kroil
>penetrating oil, but still broken bolts in those locations would not be
fun.

You guessed it Mark.  My exhaust replacement turned into an engine drop
which lead to fixing other problems as well--one new head and seal, resealed
several oil leaks, etc.  I'd probably wait until the last minute before
touching those pipes as the hardware is often unworkable and breaks.  Good
luck.  Jay