Mac :: Mac Pro 2006 Successfully Change Into 2.66 - Adjustable Screwdriver With Extender?

Just a report on my successful upgrade from a Mac Pro 2006 2.66 quad (5150s) to a 3.00 quad (5160s). It was pretty easy, but I can't stress enough having the right tools, particularly the long, thin 3mm allen wrench. You need about 10" of length to get down to the heatsink nuts on the motherboard. I thought my adjustable screwdriver with extender would work, but the extender was too fat for the cutouts in the heatsink. You need a rod no more than 5/16" wide. Also, though people have said that a 15 Torx works (it does), I actually think the 3mm hex is the perfect fit. It may be tough finding these locally, even at a home depot, so you may want to buy online ahead of time unless you want to splurge and buy a set of long allen wrench keys (~$25 and up). The other challenge was connecting the lower heatsink's temperature sensor cable to the motherboard. If you have fat fingers like me, an angled hemostat or needlenose pliers will help you get into the tight space. And lastly, a small vacuum cleaner would be useful to suck all of the dust bunnies off the heatsinks and the fans and out of the motherboard's nooks and crannies. While you're in there, you might as well clean it out