Hey, i was talking to my auto shop teacher, and reading in magazines, and my teacher said dump some gears into mine and i'll be just about as quick as a GT. The magazine said so as well. I was thinking 3.73, or 4.10s. Anyone have these in their car, or anyone do a gear swap before? But i was curious, what will this do for my gas mileage? Will my engine red line on me at WOT?