How long did it take you to replace your IMS?

[truegearhead]

I've searched but couldn't find any posts on how long it took you guys to do to the IMS job. Maybe because most of you do it slowly and have another car to drive, or maybe I'm just not good with the interwebs.

Anyways, I'm about to tackle the IMS/clutch job and am relying on my Boxster to take me work at some point. I'm planning on taking three days to do it and am pretty mechanically inclined(I've done engine swaps, clutch jobs, etc). I'm doing the work on the ground though in my garage. What do you guys think, how long did it take you? Was it easier or harder then you expected?