The harness bar bolts onto the same place as the interia reels. Same bracket different holes.
http://www.stsa.co.uk/gallery/5EXi/B...G_5875.JPG.php
It goes betweent the driver side roll bar and the passenger side roll bar.
You then loop the two top most harness straps around the bar, through holes in the seat back.
My concern is the holes for the bar in the roll cage appear to be too low to clear the rear fiber on the bulk head.
I think I will need to weld on a new plate, on the roll cage to increase the hole height and clear the fiber.
I guess you after some pictures of this set up?