most likely not worth it. even in older hondas, like the 2nd gen legend and 5th gen accord (jdm accord had auto climate), the amount of parts that you'd need to get is substantial. i'm guessing the 6th gen climate control system is more complicated, so it'll be even harder. wiring it up isn't gonna be fun - if you have a EE degree or a lot of experience with electronics (i don't just mean computers and stereos) you might be fine. otherwise you'd better find someone that's willing to put in a ton of hours helping you.

unfortunately, it's not going to be a matter of just switching the cluster.