here my horn! i thought about mounting them underneath also but i go through to much mud! and theyre to dang big to mount anywhere else!...so up top they went!
and i know my air tank is a little big but hey, it was free from work! my boss was going to throw it away! so i snatched it! but i dont know how long of a blast i can do....ive wanted to do it but i havnt. ive held it down for about 10 sec and lost about 20 psi. and i usally have the tank about 140 psi