I agree on the stall converter. That's how to reduce your 60 foot times. Reduce those down to 1.8 and you are easily in the 13s. Now which converter to get you there is a whole seperate topic. I am trying a Midwest 2800 converter I paid $299 new for since this is my first non-stock converter. I was a die-hard manual tranny person from day one but am very happy with the performance of the 4L60E other than it won't let me rev up the engine and side step the clutch. I figure a refresh on the clutches in the automatic about every 15-20K since I love to boil the hides off in the staging lane.