It can be done by yourself. But not recommended for a first timer. It requires a lot of finese and patience to get it lined up good enough while balancing it on a floor jack with one hand and trying to move it around with another, and start a bolt with yet another hand that you dont have.. at the same time jacking the engine up to tilt it back, making sure the tranny lines are out of the way, the TV cable, the torque converter lined up, and the dowel pins....definately has the potential to be a pain in the you know what...
