Hooker Header Help

if it helps the engine is just sitting in there, i have no rad hooked up the engine isn’t even bolted down. so i just raised the engine up as high as possible?
Well, I raised the car with engine mounted in place. The key for me was/is getting that straight angle up into place. If you just need a little wiggle room, guessing you could loosen up that side motor mount.

Pics might help troubleshoot.