For those 90s vintage gassers, regearing is the single most straight forward, most bang for the buck, absolute power gaining solution. Period. I've played ALL the games on my current vehicle over the past 15 years. Going from 3.55 to 4.10 reaped the most "go", and was the most reliable. I played with tuners, super chargers, rv cams, complete engine rebuilds, tranny tunes. The one change that instantly worked, and still does no matter what, is the gear ratio. Almost all other changes require special computer tunes, which often require premium fuel, etc, etc.