ok,so my car changed since i put in my 3.73s years ago,i have a 331 stroker now,summer and occasional weekend track car.....my first gear although fun on the street,was basictly useless at the track,and even for the street i pull out of first in the blink of an eye....i ordered the tko 600,i noticed that the first gear is lower wich might make it a little difference but i was thinking of switching to 355s or 331s?......wondering if that will hurt my times or better them?