Feel Free to laugh and make fun of me. i just gotta ask this one

Ok weve all played Gran Turismo at some point. i know the whole weight modification thing works in real life. So i got a 97accord lx. i love my car but i know the thing is way too heavy, like almost 3,000lbs curb weight . heavy=slow. so i want to know how much weight could be removed from a honda accord and how much would it cost me? i want to keep the windows. i will appreciate ANY help thanks.