Yeah it's a PITA. Guys with the 3.7s and 4.7s have been able to snake this line in... but with the 5.7 i'm pretty sure the exhaust has to be dropped to get the lines out.

Here was my ordeal: http://www.theultimatejeep.com/showt...lacement/page3

Note I just found one of my lines leaking again and had to tighten up the clamps some more (they were double-clamped after the replacement line pulled off)