What exactly is it that's making you want to get away from hydraulic transmissions? My thinking on the subject is that if hydraulic trannies are really that much worse than cable ones, then Honda would have just stuck with cable trannies rather than switching all of their cars over. The only real reason I can see to switch back to a cable setup is because you can get older cable B-series trannies for cheaper than the newer hydraulic ones.
Anyways, to answer your question, yes, several companies make hydraulic to cable conversion kits. I know for a fact that Hasport has one. I've seen others, but I can't remember where at the moment.