I was doing to old car shuffle getting ready to move this project to the other side of the backyard for longer term storage, and I discovered it has a Sure Grip in it I believe. No tags. The yoke is 3 1/2" wide, is that small or large, I can't remember. Anyway I have the car jacked up with the wheels on it and I can turn the driveline. How do I figure out the ratio? I may have to "borrow" this gear for awhile if its a 3:55 It was probebly changed at one point. The car came with a 318/904. Would it be on the fender tag?Thanks