Impressed with Uku's reply there. Only trouble is they drop to 70hz. I would try some 8"s in the doors, obviously using pods. A sub can be mounted in the front. It lives in the passenger footwell in a custom made box...if made and done correctly can sound very good and look good too. I have seen and heard one in a 106 GTI and was highly impressed. Obviously you cant go for a 12" or 15", but a 10" up front is great. I will see if i can get some pics and exact measurements for you.