Mazda-2-Mazda
Unfortunately there are not a lot, if any, Mazda engines that produce the type of power we are "dreaming of" we are sort of limited. On the other hand, let's look at the Mazda/Ford partnership.
Take the new engine from the Mustang SVT Cobra. 390hp/390ft-lb
in a car that only weighs in at 3665 lbs., take that and throw it into a car that only weighs 2716 lbs and you have the power you would need. Throw in a Supercharger (bigger) or a twin turbo charger if that is more your style and you have a land rocket.
Now comes the hard part. Fabricating a trannie to handle the power, converting the MP5 or MP3 to RWD and keep tires on the car instead of gooie, smoking, things that once resembled tires.
There is a dream