I received the PE parts produced by my friend Pawel.
First, and most difficult job was to replace the engine grilles, which by Revell look poor:
...small holes were drilled:
...and original grilles removed:
...i marked the outline of the PE part, and cut into the body to make the room for the new grilles to be glued flush with the bodywork...
...grilles in place...
....here with dry fitted engine lid: