I initially tried to rebuild my wheel cylinders on my 1971 FJ40. After removing them, I discovered the previous owner did not have any left-handed cylinders. At that point, I decided to get new replacement cylinders from SOR. I thought I was headed down the home stretch, until I tried to screw the union bolt into the replacement cylinder. Apparently, the threaded receiving port on the backside of the replacement cylinders is a smaller diameter than the original. If anyone has used the SOR replacement cylinders, did you get new union bolts/unions? If so, what size and where?