There was some discussion of some of this on the Big Block Dart site.
http://www.bigblockdart.com/forum/showthread.php?5222-3rd.-Generation-Hemi-A-Body-Stuff
They used stock cast iron grand cherokee manifolds in a Hot Rod magazine build.
http://www.hotrod.com/howto/hrdp_0706_hemi_swap/index.html
I'm not sure if anyone has managed to use the 6.1 SRT cherokee manifolds or not, but I saw it discussed. Stock truck manifolds definately will not work.
I am using TTI headers. They are definately pricey and a tight fit.