- Stock #197775 - Rare Formula SR-1! Fresh water ONLY, low hours on twin Chevy small blocks 410's, well maintained, great shape! Located in Kewaunee, WI, this 29-foot Formula LS is sure to grab attention on the water! Formula produces boats that are world renowned for beautiful styling, advanced engineering, and exciting performance on the water. Powered by twin SBC 410 Cubic Inch engines with 410HP each, this Formula can get you to your favorite spot, or help you discover a new one. This flat glass Fastboat has had plenty of upgrades over the years; Kiekaffer Cast K-planes in 1999, new G... read more