I think you'll be fine! Just re-read the entire MBZ Service Manual "Model Year 1992 Introduction into Service Models 124.034/036 (400E/500E)" for ya.
This publication enumerates the vast majority of modifications made for these cars. And near as I can tell, the drivetrain should bolt right in...and according to another member of the board, the 400E LH Injection Module works fine for a 500E, too, so the electronics are likely interchangeable.
Y'know, if that's a '92 motor it's a PERFECT donor motor for a 6.0-6.5 reworking...food for thought
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All the best, Michael
500E
300TE
[This message has been edited by Michael (edited 11-16-2000).]