It's a 5469. Precision recommends at 3k stall. Some members mentioned 3200. I don't mind a little lag. Gonna run the car with stock turbo just to see what she does. New trans ,converter and down pipe coming soon. Hopefully be able to see what she'll do towards the fall with upgraded turbo. I'm only looking for mid to high elevens. Hoping I won't need to push her north of 20-22 lbs to get there.