REVN7

Hi every one I am new to the rotory scene and need some direction. I have jsut come across a s1 rx7 with a 12a engine.



I want to build a motor for the rx7 for weekend street use. All I want at this stage is a bridgeport to add performance.



Am I better to use a 12a or find a 13b if a 13b motor which series are the best for N/A performance.



Thanks for your help. REVN7