Hedman Headers Won't Fit
Yeah, what doogievlg said. It sounded kinda like you planned on bolting the headers on, and then installing the engine. That will never happen. Let's see some pictures of the headers, so we can tell you if you need to drop the drag link. I'm pretty sure you will. Then you lay the headers in the bay, and carefully lower the engine into the thing. Lots of blankets, and a couple friends make it go a lot more easily.