Hmmm... interesting. : ) That looks like a great solution. However nice the install job, I really don't fancy some kind of custom made MDF/fibre glass box behind the seats, (would spoil the old car look and attract too much thieving attention) so sticking them in the boot would be perfect.
How exactly are they installed? Is there sound deadening, or did you just cut holes in the back panel and stick them through? I'm really interested to know how this could be done.
Thanks