You don't need to change the yoke. Just get the correct u-joint. You may need a conversion or "bastard" u-joint with the driveshaft side being different than the yoke side. Start by carefully measuring the mating parts, and also note how they are designed to assemble together. Then go to a site like Denny's Driveshafts and buy the u-joint you need.
Universal Joints, U Joints, U-Joints - Denny's Driveshafts
