I have a feeling from the previous posts this wont be well recieved...
My oppinion is to stay waya from 6x9s or any speakers that are oval unless you have NO options, imagine oval wheels, they just arent as effiecent. You cant beat a good set of components and maybe a 10" sub (a good 10" can perform aswell as 12" or 15" subs in most applications) even a 8" sub will probably give you the desired effect, the obvious downside is the space it takes up.
I would happily design and build you a box for the sub of your choice, shame your not more local to bishops stortford, we could get some pics and scratch our heads about it over a coffee
