First of all, the speed limiter is there for a reason. There are things on your truck like tires and driveshaft U Joints that aren't designed to safely spin faster than that. If something like that lets go at those speeds, it's really bad news for you and anybody unlucky enough to be nearby at that time. I'm going to give you the benefit of the doubt and assume that this racing only happens on racetracks, but if you're doing it on the street then that's a whole other level of carelessness. If you want to go fast in a Ranger, there's more to doing it safely than just removing the limiter, punching the gas pedal, and trying to keep it on the road.
Now that the disclaimer is out of the way, this is the only completed ecoboost Ranger that I've seen:
When I did this swap my original 2.3 duratec motor did have AC, but before the swap I had a turbo on the 2.3, which required deleting the AC to fit it in there. Even with my current swap the heater blend door gets in the way. I am currently using a little heater core thats meant for utility...
www.therangerstation.com
The Ecoboost has a high pressure fuel pump on the back of the cylinder head that requires modding your firewall and eliminating the heat/AC plenum, or doing custom engine mounts and moving the entire engine/trans forward and getting a custom driveshaft made. You'll also have to figure out steering, as the ecoboost never had a power steering pump, and you'll have to buy the Ford Controls pack since the regular Ranger PCM can't control the direct injection, even with a tune.
In my opinion (which you can probably gather from reading that thread), you could have 90% of the ecoboost gains for way less work and a much cleaner install by just boosting the stock Duratec, getting bigger injectors, and a $400 PCM tune. But it's a free country.