I changed out my #8 AD injector because it was failing. I got mine from eBay but it was a place called "Pensacola Fuel Injection Inc." in Florida. It is a reman. one and it was shipped to me, $12 for the 3 day shipping and $100 for the injector itself. They took a credit card number to have on file, I have 30 days to return the core otherwise they charge $75. And guess what it works! They had 100% positive responses and there were alot of them.