Dexron II hasn't been available for quite some time, but ALL Dexron transmission fluids are backwards compatible. You can still find Dexron III at most auto stores, and it's nice & cheap. Since about 2006, GM has been using Dexron VI (6) in all their automatic transmissions, and that will work for your Toyota's power steering too.
To add; that Prestone fluid you have might be OK for a newer Asian vehicles, but yours is 25+ years old,
I'd use Dexron III.