Hello, Atlanta,
I've been very happy with my recent Sears Diehard International,
#02831241000, $99.00, with 825 CCA (cold cranking amps), according to
the salesperson, it's the recomended replacement for my '90 GL.
Fortunately, we've had a mild winter this year, and haven't needed to
de-ice the locks once!
Don't know what everybody else uses, but this does it for me...
Hope it helps!
Doug
'90 GL