my dad just put a GM 350/ 260 HP in his '72 C10 and used all the parts from his old 350 that the crate motor did not come with ( manifold, water pump ect... ). plenty of power with a 3/50 warranty and no core charge. the motor was about $1,500 crated and freighted to the door, he bought it from Jegs. it is a 3/50 warranty as long as you put the engine in a 1970-1986 GM vehicle originally equipped with a V8, all other cases it's a 12 month parts only warranty.