Sure..I haven't done 300E manifolds, but a number of Benz manifolds.. I like Jet Hot coatings.if you want to Really cut down on temps have both the inner and outer surfaces covered.

Or, if you are on a budget and live in a reasonably dry environment you can always wrap them.

Jonathan

__________________
Blue Ridge Mercedes
Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
Follow Us on Facebook!
Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
Mercedes Repair Atlanta