Hey guys- was wondering if it was possible to replace the DD with the older DE. I am also suffering the sludged engine, and at this point, I'm going to be due up for a new engine. The DEs are both more available, cheaper, and seemingly more reliable. I intend to do this myself with the help of a friend. In the meantime, I want to see if a) anyone has done this and b) if it's a viable option. Thanks much for your time!