If anyone is interested in an Optima Yellow top size 34 R for there R56 hit me up. I recently bought one for mine 3 days later the timing chain snapped destroying the engine. I now have a 2015 F 56 S which the battery will not fit. It's been used for 3 days can't return would like to try to get something out of it. For those who have been looking for an AGM replacement I do know that the 34 R frame size optima's will fit. When I get out to the dealership to clean my old car out I can take pic of the battery installed in stock location using factory tie down. Since it is a battery if your interested being local is a plus.