Nope, never done this before, neither has my buddy Tom. We've changed a crossmember before and some other small body work. It's really quite fun and exciting and we're very proud. We're a little afraid the car might not be "true" after, but we've measured and levelled as much as possible, I think it's going to be okay.
Just to recap.......we've gone from this, to this, in less than 3 weeks of spare time!