Crossover upgrade?

I just had Chris at Partsconnexion put a kit together for my Kappa 9's. Supply him with the schematic, your budget, and away you go. It can be better than stock or just a lot more expensive. A rebuild will always be an improvement. You definitely need knowledge or someone knowledgeable to direct where to spend the money. However with a two-way I would go all out.

Csontos thanks for the Parts Connection tip.
I've heard of them but they hadn't come to mind for this.

I am a believer in crossover upgrade as it results in very high improved performance at a much less cost , and found it cheaper ( less costly ) way to upgrade than to buy a new pair of speakers.
Simplest way is to replace and upgrade on quality of capacitors , resistors, internal wiring , go value/rating strictly matching with the old ones, but to go for much higher quality.
You can do it with help of some local electronic shop guy . Sending all the way to Canada may become expensive. Replacing these parts is easy , but if you have damaged drivers and want to replace them also may be you can think to send them to partsconexion . Another place to consider is parts express ( I think I recall it right) .