I just did the install today. It was pretty easy but there were a few quirks along the way:
The recommended 4x 5/8" screws were too thick to screw into the chrome portion of the shifter. I had to power drill the opening to allow a 4x screw to fit (snuggly might I add). After that it was smooth-sailing but a few words of caution; be careful with the masking tape to hold the shifter in place, some of the glue residue stained the aluminum and also peeled off some of the chrome face.
Also, the shift gate (I don't know what to call it, but it's the portion that fits around the shifter) came dislodged from factory. I installed it like this and had trouble shifting to park I had to wiggle the shifter. After I opened it up again I saw that it wasn't riding on the slide that it was supposed to be on. After that it was smooth sailing.
I set it in place right before the top starts to show the gap and positioned it all the way to the right. I'm able to shift smoothly through all gears including downshifting.
Good luck!
By the way, it's safe to say I'm probably one of the most handicappe diy'ers out there, and if I could do it, anyone can.