My understanding is that on the Bags serial number the last 6 numbers indicate the Bag Size. On my boat a 07 Supra 21v it came stock with a 650 lbs front sack and 400 lbs sacks for each rear locker. The 400 lbs sacks have a serial number ending in 101670 or 10 x 16 x 70.

From the serial number I see in your picture 191988 I think that is close to 1200 lbs. I'm not clear what came stock with your boat.

On my boat I am running a stock front bag, 650 lbs, in each rear locker and a single gravity games front sac, 1200 lbs, up front. I also put a Fly High Pro X Series Center Locker/Rear Seat Sac, 650 lbs, on the rear seat and 3 Fly High Fat Bricks on the floor 155 lbs each.