yah im doing it all myself it is this is only the second enclosure ive made so i dont know what it is going to look like in the end i always change my mind at the last minute.the sub is actually probally a little louder facing back my even with alot of dynomat the trunk rattles way too much and it sounds like crap from the outside of the car. with it facing in the trunk does not rattle and as long as i keep the seat up is sounds good. but if the seats are down its not as good sounding.