Thanks for all the feedback. I've been looking and studying over some of the ads listing the injectors I'm needing and have noticed that most of them list the seller as located in China so I'm trying to stay away from those if I can and just deal with the ones that are located in the USA. I'm debating if I should get after market ones or try to get the acdelco since they are going in a truck I'm fixing up as a spare/ hunting truck so not really wanting to spend $800 on injectors so that's why I started looking at ebay.