2 guys will make things a lot easier. I did it by myself, and it was fun!
When you install the new converter make sure its seated all the way on the splines. Lift and turn by the knob on the back of the converter to ensure proper seating. A converter not installed properly will damage the front pump on the tranny and you'll end up frying the tranny. Oh and make sure you don't forget to reconnect the TV cable when your all done!