One of my heater hoses is leaking slightly, but only when the car is running.

I've been calling all of the local part stores, but none of them have a part listed. Are these hoses molded, or are they just regular hoses? If the latter, what is the hose size? I changed them out once before, but it was 2 or 3 years ago, and I can't remember where I got the hoses from. I do remember that it was a PITA, so I'd like to change out both hoses and be done with it.

rockauto.com

That's where I get mine.

while we're on the subject, why is there SOHC and DOHC?

http://www.2gnt.com/CAPS/main55/main55sub010.html

LOLOLOL

I just bought bulk hose and a few anti-kink coils.

Yes, they are molded hoses. I picked up a set from the Dealership... They aren't that expensive and will have the correct contours. You could always just use a generic auto-part store heater hose, you'll just have to make sure that you route and support them properly.