Battery
Best for the price can be found at any Wal-Mart. Ever Start 58-3S is the Part Number. It's a smaller size, and they don't make this size in the Maxx-Start line, which has the best warranty(3 yr.free replacement). I've got this battery in both my SC's,91 and 95, and have never had a problem with either of them. This is the best battery for the price if you are on a budget.
They are around 55 bucks out the door.
You can also go with a Die-Hard, which is a great battery, but will set you back over $100.Avail. at any Sears.
If you want the ultimate, go for the Optima. It is the best without question, due to its advanced design and exteme durability.Naturally, it's also the most expensive.They go for 115-150, with the best deal being at Costco.
Average Life for a battery is 5-10 years. An SC has a high battery load with so many systems relying on good voltage for proper function.I suggest having your charging system checked out every time you replace a battery just to make sure that everything else is working like it should.
Personally, I go for the cheapies. Their life span is not that much less than the high dollar ones. Wal-Mart stands behind the warrantee's if it goes out before it's time.I've had good luck with them, and would prefer to save the money.
Others want the best, and will get a few more more years out of them probably, but I've seen the high dollar ones fade out just like the budget ones.
It's a personal choice which you opt for.
One thing though, I try to stay away from AutoZone if possible. I've found that Kragens, and even Pep Boys, have better quality parts than AZ.
Good Luck with it! ~Dave