Swap time

I got the motor mount, oil pan, oil pick up and flex plate. I can use the stock manifolds off the 318 but really wanna get these headers on. That’s why I’m trying to figure out if it can work and if so what do I need to do to make it possible
Without trying myself, I've heard the 5901 headers have terrible fitment. Somebody here will chime in with 1st hand experience.