This is the All Wood 28" Swamp Buggy Airboat by Dumas. This Boat is Designed for a .19-.20 Aircraft Engine. FEATURES: Precision die-cut birch and mahogany plywood parts Easy to assemble and use Can be used on almost any wet surface INCLUDES: All neccessary wood parts Instructions and plans REQUIRES: .19-.20 airplane engine 2-channel radio with two servos Pusher prop R/C installation hardware Control horn, rubber gasket, push rods, and boat antenna Paint SPECS: Length: 28" Beam: 10" Power: .20 size airplane engine COMMENTS: The ACG Lists the OS Engines .25 LA. This Engins is Slightly Larger than the Manufacturer Recommended .19 to .20. Modeler Should Be Aware and Run the Engine Rich to Avoid Overpowering the Boat. 10/21/98mgc ir/jl