The Owner of this 1991 Formula 311 SR1 has spent over $32k since 2006 to update and upgrade this boat !! - Motors, drives, cockpit upholstery. ** ONLY 100 or so hours since total engine rebuild in 2006 !! ONLY 541 Original Hours !! 2012 custom MYCO triple axle trailer is also included ($12,000 in 2012) ** Please review all the invoices for work performed on this Formula since 2006 in the photo section >>> Engines upgraded to 575 HP and 620 ft lbs of torque !!! ** Other mechanical upgrades include IMCO power steering, XR outdrives with IMCO lowers. The ...