We have drilled out the yokes for years. Drill the 4 holes out to 1/4" and get some 1/4" fine thread grade 8 allen head cap screws with a lock washer and nut on the back side. They are 2 1/4" long if I remember correct (measure yours to be sure). The allen head is easier to work with for tightening. Use your straps over and it's a pretty cheap upgrade. We have always added a drop of blue or red loctite for extra insurance since we like to "enjoy" our cars at times... You can drill the yoke while on the car, just put the car on jack stands and you can turn the yoke to the bottom for easier drilling.