OK, here is the unofficial LH buyers checklist!
Looking back on it, check the tranny fluid! Make sure it is nice and pink, not brown or black! Mine had to have a solenoid changed after 900 miles of me owning it due to dirty fluid. That mistake cost me 420 bucks!
Make sure the tranny feels OK. Be on the lookout for confused or just plain dumb shifts and very mushy shifts or the opposite, shifts that jerk the car.
Almost all the 3.2/3.5 engines tick shortly after startup but this loud tick should quiet down quickly. After it warms up, it should purr. A slightly lumpy idle is normal.
Make sure the coolant is the orange kind (2nd gen only) and that it is clean. Make sure there is no oil in it! (duh!) Check for smoke on the exhaust (duh!) and check the oil quality. Be on the lookout for funky looking oil that reembles a milkshake, this means the engine is damaged, usually the headgasket is shot. The oil should be fairly clean when the car is on the lot brown is ok, but jet black oil would be a BAD sign that the car has been neglected.
Check for fluid leaks.
Check to make sure it really had ABS if it is advertised! It is NOT standard! The presense of ABS can be verified by looking in the fusebox under the hood and seeing if the ABS fuses are in place.
Check the brakes! Mine had worn pads when I bought it. I got a discount for that.
Check the steering alignment.
Check the tire condition.
Check the struts. If the car bounces more than 1.5 times after you push on it hard, the struts are worn.
Check the stereo. Make sure the CD player works and that all the speakers operate.
Turn the steering wheel a bit, there should be no loud clunks! Clunks indicate a tierod failure. The system shouldn't make too much noise when operating. There should be very little play, if any in the steering wheel.
Check the headlights, brake lights and turn signals.
Maks sure the cruise and horn work! You don't want to buy a car with a bad clockspring.
Check the A/C. This is important. If the car has ATC (auto temp control), do the ATC diags procedure found somewhere on these forums. It should NOT smell like mold.
Check for excessive rust. This could indicate a flood car.
Check for funky interior smells like mold or dead animals. Mold is an indicaton of flooding, dead animals are an indication of GROSS (pun intended) neglect.
Check for PCM codes using the key trick found on the forums, there should be no codes except maybe a "battery has been disconnected" code. Bring the code lookup sheets with you to the lot.
If you can, get a carfax report!
Make the used car dealer SCARED! Know your stuff, don't let him BS you. If you don't feel comfortable checking all this stuff out, bring a friend who knows cars with you or let a mechanic look it over.