Weird but, 2016 Mustang v6 or 2016 Jeep jku?

So, when I turn 18, I'm planning on buying a new vehicle. But I'm debating between a wrangler and a mustang. My current vehicle is a ford ranger 4x4, it's good off road, but not as good on road. I love to go mudding and I love to go 70 on curvy backroads. I do all that with my ranger, but the fun factor is missing. I also need something that can handle going 80 mph for over 100 miles because I travel a lot too. Can the Jeep handle all of that? I mean yeah, the Jeep won't be going so fast on backroads, and the mustang would get stuck on a pebble in the road, they are both beautiful, so what would you choose in these conditions?

The Jeep can't handle speeds like that, along with corners. Here's a great thought snowflake, price out insurance on each, you will be pleasantly surprised. By the way, what the hell is a "jku?"

Why don't you buy a real off-road truck then, able to handle both - speed and terrain? FJ Cruiser, Tundra, Nissan Frontier - I believe any of these options would be better for your needs.