[untamed]

I don't know how large a pump you are looking for...but here's a good list. Most all of these are pre-equipped with needle wheel impellers. You could also easily get a needle wheel impeller to match a pump you obtained separately.

http://www.customaquatic.com/customa...dexid=ps-ac-pm

I don't know if you've dealt with customaquatic, but they've been good to me. As a Canadian, you have to call to place orders. Website doesn't accept international orders.