Swapping 6.1 into Duster, What manifolds? (NO TTI)

I did a bit of a comparison in another thread, the 2009+ 5.7 manifolds will probably not work as they are too wide, you might have luck with the 2009-2010 Jeep 5.7 manifolds. Your best bet probably is to buy a set of TTI's and then sell them down the track when you upgrade, you will take a hit on them but probably no more than any other temporary solution.