I received the part today and did a swap in. It worked out nice and no regrets doing the mod.
For me, this is what was involved:
0) Electric shock or system booting up when your playing with its internals is never good. I went into the Bios, Power, disable battery until next AC connect.
1) I needed to remove 7 screws from the back of the unit.
2) With a guitar pick (to avoid denting the cover), I slid around the crack to release the latches from the back cover. Didn't break any, thanks to the guitar pick, perfect for this kind of job.
3) Had to remove the battery as it is right overtop the trackpad. 5 screws holding it in place. I didn't bother unplugging the battery at risk of nicking a lead, so I just move the battery and laid it flat overtop while I worked on the trackpad.
4) 5 small screws holding the trackpad in place. Removed this. There is a very fine connection wire to the trackpad. I lifted the cable lock (black piece) and then gently slid the connector cable out of the socket. You don't want to force it. Came out nice.
5) With screws and cable disconnected, the trackpad popped out.
6) Plopped in the new one, lined up nicely but I notice one of the screw holes is not applicable, so only attached back 4/5 screws.
7) the connector cable was a pain to connect. The socket is slightly lower down on this trackpad and I noticed that the socket is about 1mm slimmer (albeit all the pins are there). It makes the cable more snug to connect. You need to be very carefully sliding the cable in. Don't force it or nice the cable. It is tight but not overly tight. Just make sure you have a good viewing angle, grasp the cable inbetween your thumb and index finger and slide it into the socket. The white indicator on the cable should line up with the edge of the socket. That is how you will know it is fully connected. Slide the black bar down to lock into place.
line up the battery and put back its screws.
Before I closed up the unit, I place the cover back on and powered up to ensure the trackpad was working.