all you need is yourself. i dont see why you need an extra person just to put on the gasket as 2 people are holding up the head. i mean its like a 3 step progress, take head off and place it aside, put gasket on, pick head back up and put it on(i did mine all by my lonesome). dont get me wrong, an extra 4 hands is always helpful, but dont base your whole install on how fast you can do it...