What's a Good Replacement Rear Diff for the E-Maxx?

[Overdriven]

Thanks for the lesson Gee, and here I thought I knew just about everything about traxxas monsters. I was just looking over the exploded views and noticed the 3905 has the e-revo spec diffs with the I-bar carrier support you mentioned, the 4908 T-maxx does not. Although the outer cases, bearings, ring+pinion are the same and both use 2.5mm diff cup screws.

BTW I still have those Alum cased diffs all shimmed ready to go