First off if your woofer has no cap thats even better, secondly YES an inductor mainly on the woofer alone will make a great deal of difference, caps not so much... You will get better more solid response and you will swear your speaker goes up another 3 db from like 98 to 101 db if you put that inductor on the woofer.. I guess the mundorf inductor is fine, but was not aware they existed? The duelunds look killer, but man they gotta be a ridiculous amount of money, I would go alpha core the big ones... You don't have a mghz inductor by the way its 2.5 mH, which is Milli henry as the measurment... That is a pretty large and VERY heavy in weight inductor by the way.. On your woofers will open them up like niagra falls so your bass response will be pretty highly increased...
As for inductors on your mids and highs, yes new inductors like the 14 gauge alpha cores would be far superior to the iron core cheapy ones on them now from the 70's, however inductors are more or less going to be more accurate buying new ones, not necessarily night and day difference on the horns overall like the caps, its the reverse for woofers, it will be a night and day difference with better inductors on the woofers, but caps are less critical on the woofers as long as they are the accurate value for the most part, in your case even better you don't need them at all! As a matter of fact you might find your favorite overall upgrade to that speaker is the inductor on the woofer all together, your integration with the mid driver will be that much more lush and dynamic.
Again unless your building outboard crossovers which I highly suggest, you might have a problem fitting and mounting a 2 lb weight inductor inside... they are not that cheap either your gonna be about 60 to 70 bucks each for that value I believe in the Goertz alpha core copper ribbon 12 gauge.
