[z06bigbird]

First, I don't know nothin about nothin.

If I were you, I would make a few calls to some engine rebuilding shops and ask for the shop foreman or manager. He/she should be able to answer your questions about the copper. That use of copper sounds, btw, to be old technology.

or

2. Visit a local GM dealer and ask the service mgr if you can talk with this mechanic who does engine overhauls or engine repairs. He will likely accommodate you and your box of donuts.

From your profit, it appears that you are military. Thank you for your service. We all appreciate what you are doing for us and the rest of our country.

When you go to dealers seeking advice like this, let them know that you are in the military. They will generally be more than helpful. My son is military, and local service managers typically give me their cell phone numbers so that he can contact them directly. They also give me print outs on specific repairs so that he has additional info that is not normally available to the general public. Don't be shy about asking these guys for help.

You can make some neat friends for life. The service managers, btw, have personalities that typically are fantastic. Keep in mind that their job is to dance between keeping the customers happy and keeping the dealership owner happy. I have found that the more gray hair a service mgr has, the more helpful and friendly he will be.