Before I tear everything apart, how difficult is it to replace the drive gear (I've never done it before)? Is it just a matter of droppiung the drive shaft by disconnecting the u-joint and pulling the yoke or is it more involved than that? Also, I swapped the ring and pinion gears from the original 3.90 to 3.55. Since then, the speedo registered about 10 MPH lower than the actual speed. Can I make up for that in the speedo gear change?
