Wendell,
   I painted the inside of my bottom cowl with the Jeffco paint and it is
beautiful.  Oil will be easy to wipe up, too.  Since I'm building an IV-P I
used tank sealant to attach heat shield material (Aircraft Spruce) in the
areas near the turbos.  I then outlined the material with the same tank
sealant.  It also looks good.  I have run the engine many times but first
flight is Dec 9th so I have no time on the cowl.
Best luck,
Walter Dodson