I have been reading about Europe's Ultralights and I am impressed with how fast and efficient they are.

There are multiple options that will carry 2 people/600lbs over 150mph on less than 5gph, typically with a Rotax 912. The Shark Aero (https://www.sharkaero.com/) can be built as an EAB kit, but I cannot find much information on the kit (or any that have been completed as EAB).

I would think that the Falco F8L could come close to this if it were equipped with a Rotax 912, but you can no longer buy the kit.

Are there any other US available kits that can meet or surpass these performance numbers?