The base engine should be the 2.5L skyactiv x, and the upgraded engine should be a 3.8L straight-6 version of that same engine. An inline 6 would respond very well to the compression ignition and supercharger.
I agree with what you said about the purist version, but I highly doubt something like that would make it to production in todays day and age.
All Mazda RX vehicles must have a rotary though.
I agree for 2.5, but I believe that 3.0 6 cylinder version of 2.0 liter Skyactive X would be more palatable and more realistic.
3.8 is like... to good to be true.
I agree, but we can dream.
When I was young, I couldn't afford the cars I wanted. I still want the same thing, but now they don't make them anymore, and I'm too old to get into restoring old cars.
RX, I completely, unequivocally agree.
Mazda did make 626 couple, however.
And 929 coupe, too.
Those were the days.