12 second 340

HI Adam
Thanx for the welcome in the newbies section.
My car is now 440 but was 340 4 speed and ran 12.8 106.
What is your combo, i noticed you are running 3.23 gear with a 28" tyre, you could do with at least 3.91, which is still very streetable. Also what convertor are you using.
Mike