To know for sure if a specific 1997 Ford Ranger had those specifications, you'd need to check the vehicle's:
* Build sheet/window sticker: This would list the exact options and specifications.
* Owner's manual: This may list the axle ratio.
* Vehicle Identification Number (VIN): A dealer or Ford's online resources might be able to decode the VIN to reveal the specifications.
* Differential tag: Located on the differential itself, this tag should specify the gear ratio. You'd need to look under the truck to find it.
In short, it's possible, but not guaranteed. More information about the specific truck is needed.