The only reason I recommended duration as high as I did was because you said you wouldn't mind if you had some rumble. 218/224 would do it and being on a 112 would help give it good manners.
I feel sure the one magnummopar suggested will probably make more bottem end torque, but would not have the same sound.......it wouldn't be a difficult choice for me, because I choose power over sound every time.
