My river neighbor has one..the Tom Papp 21 deck which i am sure is the same as the ultra, prob just a little lighter. He runs a 502carb procharger set up with a Am.Turbine Pump..The boat is fun and is a great Blythe boat/lower river boat.
Hit me back if you have any questions, and ill see what i can do...contact Ultra, they have a few in stock as i know of now.