5.7 into 75 duster/header question...

well i just got a set of 05 cherokee manifolds today, allong with a durangos oil pan, pick up tube, and 4 rims and tires from a 06 charger. (they have the same BP and will work for now untill i can find something better) the price was right i got everything for the labor of a cam swap on my friends 04 ram truck. I am also going to see if the pacesetter long tubes out of my wrecked truck will fit with some tweeking. (if i have to rebuild a tube or a bend then that might be the way to go ill keep everyone posted)