well.....that would cost more money than u think.....we need a truck (say $800) .....fairly decent equiptment which can easily range up to $1000 for just a strong amp....then subs.....then someone needs to insure the vehicle, cant drive it on the road without insurance......materials for construction, etc. .....its waay too big a project to do together because no one has the money for it......why dont u try to make a system and put it in your car and go for SPL?