Tom Woods could have built their driveshaft for the JK with a 1310 series u-joint and that would most likely accept the D/S5-1310X. This is a sealed for life u-joint. It has external snap rings, it has 1.062 diameter bearing caps and is 3.219 inches wide. If he has the more heavy duty 1350 series driveshaft, then that would most likely use a D/S5-1350x. This is a sealed for life u-joint. It has external snap rings. It has 1.188 diameter bearing caps and is 3.625 inched wide.