hi i just signed up today,

I just got a 1979 mazda rx-7. It's in great condition and only has 50,000 original miles on it. I am already craving more power and I was wondering which set-up would be better. I was wondering how hard it would be to swap my 12a non-turbo to a13b turbo rotary? Or would it be better just to modify my 12a? Will the 13b bolt up to my old trans? I really need help on this.thanks.

 

See 1st gen FAQ at the top. It's mostly going to come down to how much power you want to make and how mechanically inclined you are.

 

Like he said, it's a matter of preference.