Anthony it would be helpful if you either updated your profile so that it includes your model of CX500 or always including the specific CX500 model in your posts.
There are probably four different models of heads and without knowing what year (1978, 79, 80, 81, 82) or model (Shadow, Euro, Turbo, Silverwing, etc) you are looking for it is hard for members to reply.
Your model needs to include the year and also the first 2 digits of your engine and/or frame number (either 20 or 21 or 22 or 23 or 24) as these will help to properly identify your model.
Hope this helps,
Seagrass