Yup, ol' E's a monster, all right!
The Mori mantlet is much more accurate in shape and thickness than the kit part (based on the Maus mantlet), and it's very nicely molded with cast and cut textures.
If you look at the pix of my E, I think the differences are fairly obvious. I added the lifting eye, though.
Glad to hear you've cracked into the big fella! The hull is pretty narrow, eh? I guess they were keeping transportation in mind. With the skirts and those monster tracks taken off, it's not all that wider than a Jagdtiger. Well, yeah, it is, but still, they were thinking!
Any ideas on what if any mods you're gonna do? How about a paint scheme?