Here's a nice little embellishment for your engine. Our classic fins have been applied to a valve cover breather. We did it the right way, in aircraft grade A356 aluminum, and polished to show quality standards. 3" in diameter with a 1" neck. Fits valve covers with 1-1/4" holes when using a rubber grommet.
Now, also available with a 3/4" neck to fit 1" holes when using a rubber grommet - select type desired under "Finish" above.