hods are like 20 pounds, and trunks are about the same, you could replace thos and like the guy above said get a turbo, to increase the power to weight ratio, fewnders are not heavy at all, but even 2 pounds is alot to shead on a car, the back seats are fine you can take them out in like 2 minutes and put them back in just as fast, if you have the money, than do it, your car would look sik with carbon fiber fenders, hood, and trunk lid.