I've thought about finding a Cona, the worse shape the better. Changing the driver and modifying the bass reflex tube and x-over to match its specs could give it quite a bit more kick and having it sprayed in high-gloss piano black sounds like a plan. A more dramatic "SuperCona", possibly even with an Icepower amp... tempting.
Chances are Beoworld purist fraction lynch mob will be knocking on my door shortly... 😮
Not quite from the purist point of view, but why do you need a Cona for that, if there's pretty much nothing left of it at end of the day?