My Laser came with range extending drop tanks. I never needed them and they just sat in the rafters. Now with the airplane up for sale, they will probably come in handy.
It can be set up with one or both tanks. Both tanks I think give it more than 60 gallons of fuel total! That's 6 hours of endurance. I haven't flown it yet with them on yet (we're flooded out), but I'm guessing a 140-150 mph cruise speed.
Regards,
Dave
https://davevon.wixsite.com/laser-230