Supercharging a 2002 Toyota 4runner?

Im thinking about getting a 2002 4runner. The only problem is that it makes 0-60 in just about the later part of next week. I was thinking about getting a a supercharger for it. I was wondering if it was worth it to supercharge it. All in all I would say that it would cost me about 6K to make all the appropriate mods. What will it do to the life expectancy of the vehicle? What 0-60 times can I expect? Will I have to continually do maintenance? How will it handle offroad? let me know what you guys think. I'm thinking about getting a 2002 with 80k miles on it. I hope to have it last for 6 yrs.