[stugiv]

A quick search shows that it's a serpentine belt. The most important thing is that the belt length stays within the adjustment range of the belt tensioner. A quick reference for the difference in length didn't come up with a quick search, so you may have to compare them yourself. The safest thing is to go with the specified belt so there's some wiggle room if it stretches. You can always sell your spare belt on ebay.