This listing features two collectible Arden Model Engines, sold as pieces and not complete engines. The engines are compatible with airplanes and run on nitro and glow fuel. The brand and type are both Arden Model Engines, and the displacement is currently unknown. The engines are in pieces, making it difficult to determine their condition. However, they are perfect for collectors or hobbyists looking to restore or rebuild vintage model engines. Please refer to the provided aspects for compatibility information. Thank you for considering this unique listing.