hi guys this mod add new 2 cat c3406E engines with sounds for kenworth w900 - engines have own sounds(jake,retarder,brake sound and more tho) - cat3406E 500 2500 nm torque - cat3406E power series 550 2508 nm torque(have powerfull torque curve) - they are not using adblue and fuel consumptions are high then other engines(you know they are old) - engines have own torque curve - ıf you love my work and wanna support me wme: E895382052601 HAVE FUN AND ENJOY