Yeah that's been the plan for a while now. All the "Mazdaspeed" RX-8 is is a body kit and new suspension. Maybe a couple more cosmetic goodies, but nothing spectacular. They look amazing though.
So far Mazdaspeed has built;
A turbocharged sport sedan with a 15 year old truck motor and almost as many bugs as the original FD
Another turbocharged sport sedan, this time with a new motor and all wheel drive, but also 800 extra pounds
And a N/A sports car that looks amazing and hadnles great, but isn't actually improved at all in the speed department
Good track record so far...