i done this a few weeks back mate,
and there is no way to get at it with out gettin the dash out,
first pic is dash out,that black box in the middel,thats where the motor is at
2nd pic is with it out
and this is what you have to split in half to get at the motor,make sure you have a helper here,it makes the job a lot quicker
if you look left bottom,that the wires for the motor,and some of the motor,
hope this is of any help to you :D