Personally, I have to say I think the Toyota is a EXTREMELY durable vehicle!! IT takes ALOT of abuse, doesn't require much for fixin' and helps the pocketbook on mileage!
The SuperCharger for the V6 is a great add on for the power/weight ratio and if you can fine tune the settings for peak performance - there is so much you could do!! I would look into the websites below or consider calling Downey, they are good and specialize in Toyota performance. If I can find more sites I will list them too!!
http://www.4wheelparts.com
LUV24BY