[W126 Coupe] Engine to Chassis compatibility question

[Dick Spellman]

Will a 500 Euro motor and tranny from a 500SEL fit into the SEC chassis 
with oil sump, engine mounts and transmission mount all needing to be 
the same configuration???  Or was there a different set-up employed on 
the wider, longer SEL chassis than that of the SEC.  My SEC is an 83 and 
I believe the donor SEL is an 84 or 85.

Any comments will be much appreciated.

Regards,

Dick