Aitchison

The yellow one is a 12.5 foot sprinter. It has an aluminum hull, & fiberglass deck, and is powered by a Chevy V6 262ci turbocharged engine that makes 450hp & 550 ft/lb of torque. It has been known to leave the water on a hard launch. 

The second one is a 15 foot Aitchison 5-seat, based on a very similar hull to the sprinter. A fiberglass boat, it is powered by a 450hp Chevy small block 383. Both have Hamilton/Aitchison jet units. They are made in Australia by a Kiwi by the name of Kevin Aitchison.

Thanks to Ratus Finkus for sending them in!