I can agree that the upkeep on these is not bad at all, at least if you keep them moving. I can't attest for how well they last when not moving, but in 3 years of owning mine and 50,000 miles (almost to 100k!) I have only replaced the shocks (weeping, springy ride, plus I just wanted to upgrade), oil cooler lines (small spots under the car, $300-400), and just recently the power steering fitting from the pump to the fan module (other lines just fine, $250 fix). So in three years and tons of miles I've only really had to spend around $500 to replace "failing" parts. Not bad for a limited production high-powered sports car. I'm not sure you could even change the oil in some European exotics for that.
I have done some other maintenance style upgrades/replacements, but I would consider them non-essential to a degree. Got new spark plug wires as I cracked the insulation on one when installing headers and also got some new valve cover gaskets at the time as I removed them to install the headers and they were pretty hard and leaked a bit. Bushings and ball joints are all in good shape and checked out fine with just some fresh grease. These cars are built to take a beating, so they will last a long time if you don't neglect them. They are not the high strung precision machines that many other exotics are.
