Greetings. I've got two of these old things, I am somewhat edjicated on them. I'm seeking to use them with my Acoustic 370 head, and need a suitable 215 cab. I'm not trying to redesign the basics, that's way more complex than I want to get... just trying to make a noise I like, and I dig an era. Even inexpensive drivers may be arguably more efficient than the E-140, I know the tree I'm barking up! Lol... Any helpful advice is way welcome! As is good humor. I'm just trying to get a sound I dig, play some music, have some fun at it. Thanks for your time.