[Paul W]

After the bracket that I have bolted to the gearbox mount the bar just has piece of bar welded at 90 degrees straight down. This passes through the rod end mounted on the gearbox arm. The arm I had made is just using a bolt tightened against the shaft of the gearbox which allows a bit of adjustment.
Once I have settled on the feel of the gearstick I will drill through the gearbox selector shaft and run a bolt through - just so it can't work loose.