Fitting a loop harness?i

[waynes world]

Hi guys, my kit car was fitted with a 3 point harness but didnt come with any harness. i have got a set of harnesses but i am struggling to find a fitting to get the rear connected up, it is a stitched in loop, originally for going around the roll cage or something, i can get a bar made to go around the back for the loop to go around but i was wondering if there is a way to fit it to this point in the pic below.



cheers

wolly