i have a big mtx sledgehammer box w/ 3 10's sittin on the folded down cab seats and the amp underneath the drivers side folded down cab seat. not the prettiest setup but it works for now since i never use the back seats and if i need to all i gotta do is take the box out. i just wanted to hear some bass. the guy who wired it just tapped into the speaker wire going to the access door speaker and ran the tap into the amplifier, so yes im using stock head unit... for now. and the crappy box setup ... for now. haha
ahh it sucks being poor.
thanks for reading.