Which Optima for F355?

Does anyone have the part number for the red or yellow top Optima that fits an F355? I've looked through prior threads and see mentions of Optima batteries fitting but don't see any specifics. I contacted Optima via e-mail and they replied that they "do not show a listing for your application." I'd like to buy a new battery to take my mechanic for fitment -- rather than take it there and then use the Interstate battery he keeps in stock.