After test driving a 97 tj se with the 2.5 4 cyl, im not sure if i should opt for the 4.0. The 4 cyl did not seem too bad on power, but i cant exactly compare to the 4.0 as i have never driven one, and dont know if the 2.4 would be worth it over the 2.5. Are the other upgrades to the sport (what...