I'm getting ready to do this myself......with the front suspension (and engine) in the car. I have two initial questions after thinking about this procedure.....
1. once the majority of the spring pressure is off there is additional pressure on the lower A arms.......I'm not really clear how to release that.
2. I'm replacing my stock spring using the 2" lowering spring from OGTS........will that be as hard to compress when installing it?
I'm sure I'll have addl. questions......as I'm not exactly sure how to replace the bushings.....I'm sure seeing them out of the car will help.