Nope.
There is a 6.4L naturally aspirated engine in the SRT model. The supercharged hemi engine in the Trackhawk model is a 6.2L hemi.
Both cost more than I wanted to spend. So I got the 5.7L hemi that was an option for the Trailhawk. The other models weren't trail rated anyway, which I kind of wanted for the 4x4 capability.
For what it is, weighing over 5,000 lbs, the Grand Cherokee with that 5.7 hemi is actually pretty peppy. Not a Corvette, of course, but it will do.
All in all, it's actually quite a nice vehicle. Got a whole lot more doodads and comfort amenities than you get with a Jeep Wrangler.