The TT Cherokee is my buddies from Mexico who sent it to Hennessey for a build that would beat my cousins Silverado(Parish's old truck). They are still in the early stages and it should be deep in the 10's when complete. The smoke at the end was from a PVC problem they are aware of and will be fixing shortly. That was with only 13 PSI of boost. Once they work out all the bugs and traction they will turn up the wick.
The other Jeep is Steve's(Sgt. Stanko) from CA not FL with a 426, lts, p&p heads and nitrous.
They don't make a 426 from the factory but you can stroke/bore a 6.1L(370ci) into a 426ci(7.0L) just like we do to the 6.0 to make it a 6.7(408).
It is relatively easy to make the LSX's go 10's because they have been out longer and their is good tuning and parts. All you have to do is copy someone else's setup whether turbo/supercharger or nitrous.
With the Hemi's they are still finding the week links like tranny, differential, transfer case, and the all important tuning. They are a couple steps behind but they will get there soon especially since HP Tuners is working on getting a real tuner for the Hemi.