track bar mount

Does any one know the size of the upper track bar mounting hole?

The hole that the trackbar connects to is tapered. I don't know I am pretty sure the largest opening of the taper (which would point downward) is about 9/16". I am only guessing...I installed a JKS adjustable trackbar and the installation directions said to enlarge the tapered hole to accept the 9/16" JKS bolt. Prior to drilling out the tapered hole, the bolt fit nicely into the largest opening of the taper...so I am guessing aorund 9/16".

My info above is referring to an 01. To get more info and likely faster responses, you may want to give some specs on your vehicle.

I had to drill out the taper on the upper hole when installing my RE adjustable tracbar to 5/8.