I've got a sub in teh front of mine mate .. there's space under the passenger footwell IIRC?
check www.themr2.com under ICE page and you'll see my sub.
J
that seems the only option, theres a bung in the pass footwell as you say, and another in the boot, so the wires need to come under the car. Cant see any other way. annoying.
MRD skirts-----
if you look just below & left of the brake fluid resoviour your see a bung - It'll come out just above the clutch pedal - bit fiddley but you can cable tie everything down nice & tidy like