You need a "Group 24." I always go to Walmart and get the Everstart Maxx. Consumer Reports always rates them at or near the top when they test them. They run about $100 and have a 3-year full replacement warranty plus another 2-years pro-rated.
The 24 size is normally used in these, and like 90% of all batteries in USA are made by one company, Johnson controls. I can't remember the "group", but there is a battery like 2 inches longer that will also fit into the tray; I didn't get that for my '98 as I was doing the install at night and didn't want to mess with it.