I'd like to thank all who replied. I appreciate the information. I wasn't planning on EFI but I don't have a problem with it. In tank pump and return already in the car. I'm leaning toward the RPM intake. How tall it sits on these heads will be the deciding factor. I know a SD will fit. Final question on the rockers. I've researched the previous posts and links and I'm still not sure which ones to look closer at. For the guys using these heads what rockers are you using and are you happy with them. Thanks again