Sub in the boot

Has anyone (AndyMac) built an stealth type enclosure for a A4 (B5).
Was thinking of building a fibreglass one in the boot nearside where the CD changer and tool box and jack are located.
Then removing the drop down door panel for the sub to face out from.
Any ideas ?

I have done quite a bit of fibreglass work and have an expert to help.

If it comes off may even sell a few to cover costs.
Any ideas on Subs - for this set up.
My Cerwin Vega has blown one of its coils so a temp fix is in order.

* Help can anyone tell me which is best - I have currently fitted in the front of my car - Infinity Reference series 5000cs component speakers.
They sound good but the tweeter seems a little harsh when the volume is turned up LOUD.
I'm interested in the HIFONICS ZS6.2C 6.5" COMPs SPEAKERS.

Could anyone tell me what is the best - the Infinity ot Hifoinics ?

Cheers

I had been considering a sub in the boot but am concerned that I don't have a folding rear seat, and therefore have a full metal panel, as well as the seat back, between boot and cabin. Is the bass going to be severely impeded? I'm worried that bass will be louder outside the car than in the cabin, and I may achieve the "chav effect" without intending to!

What do you guys think?