These are great for daily driving--I DD'd them for about 2 years. First is a bit longer than stock, 2nd will take you up to about 60, 3rd to about 80, and 4th somewhere near 110. Fifth gear is stock.
However, 400whp may be pushing these gears. Give Andrewtech a call to see what they think, but I'd be hesitant to sell these to you unless they give you the thumbs up.