I wasn't quite sure if you are buying or selling from your last post, but I am assuming your buying. Some concerns over the 2nd generation:
1.) Lack of power on the V6:
"What can I do to increase power of my 3.0 Liter V6 engine (1st and 2nd gens)
In short, nothing. To get any appreciable power gains from the 3.0 you must throw in lots of money. The most popular and cost effective change is to go with headers. Next is to change the differential gears because you probably switched to larger tires. All the other engine mods out there either do nothing or cost more than an engine swap. "
2.)Poor Mileage:
"The mileage of my 3.0L V6 really bad, is this normal?
Yes it is. I get around 17 mpg freeway and about 12mpg city (maybe less). My mileage is actually considered normal for a V6 auto transmission. During freeway driving I can get about 250 miles per tank while I've heard of people getting about 200 miles per tank. Both are normal, it all depends on your tranny type, your style of driving, and most importantly your gearing."
3.) Sagging Butt:
"The rear of the 4Runner seems to be sagging. What can I do?
The springs on all the generations of 4Runners are notorious for sagging. Usually people replace the stock springs with after market springs from Downey, Performance Products and Old Man Emu. Less popular methods are to add spacers on top of the coil springs, add spacers between the coils of the springs or add
air bags."
4.) Head gasket re-call:
"What is this headgasket recall I keep hearing about and how do I know if my 4Runner/Truck has been worked on?
Technically it's not a recall, it's a "Special Service Campaign." It affects most, but not all, 3.0L V6 engines. While the 3.0L is a reliable engine if maintained, they are notorious for the head gasket going out relatively early.
To find out whether your 4Runner/Truck has had the headgasket fixed, give your VIN number to your dealer, or call Toyota's helpline. If your head gasket has not been fixed, they should still honor the campaign and fix any damage free of charge, this includes a new engine if the block is damaged."
5.) Rust, make sure you have no rust or very little, with 45,000 miles hopefully you will not have much.
I got most of this info from THIS LINK:
http://www.yotatech.com/~corey/4runner_faq.htm
NOW THE GOOD POINTS: The 2nd generation has a reputation for holding up forever. Some are over 300,000 miles. They are really good in off road situations. I also like the looks of them. As fas as price, it sounds resonable and the ad sounds like the person may deal a little. With only 45,000 miles it sounds good to me.