I think my blue Kustom is from about 1970.
Eminence certainly knows what they are doing, and they have always been ultra helpful when I've had questions. It's always best to consult
actual hands on speaker professionals.
Since WinISD has been out the internet forums have become saturated with self proclaimed "speaker gurus" who are pretty much clueless yet don't hesitate to state facts and absolutes about speakers, cabs, and combinations they have never even
seen much less ever tested in real life.
Specs are nice; but they won't tell you how a driver/cab sounds or more importantly if you
LIKE it or not ; )
Another option might be WGS, they make a very nice, versatile 15" bass driver (
http://wgs4.com/content/15-BG ) that will take a lot of juice.
I've spent many hours with these drivers, but never used them in a cab as small as the Kustom. They should perform as well as the EVM15L's I mentioned earlier in that cab; in my experience they are probably
most similar to the EV's if you were comparing them to someone else's speaker.
The 2000S is a great classic tube bass amp IMO. Heavy, a little awkward, and pretty much devoid of any modern practical features, but a tone
monster to my ears.
I hope you like it, but if you get tired of it I'm sure you won't have much problem finding it a new home!
Good Luck!