Conclusion:
The Hoop is too wide to fit into the Tigers drive shaft tunnel. What I did was heat it with a torch, till cherry red, and then reduce the width of the upper hoop till it just fit in the driveline tunnel. This metal was too thick for me to crush in the bench vise, therefore I used the torch for bending.
The lower portion of the hoop must also be heated, and I adjusted the lower hoop so that it just fit in the upper hoop. There are 4 holes already drilled in the upper and lower, but I did not want the lower sticking down that much, so I cut about 1 off the lower. I used the holes in the upper in the upper hoop, as a template to drill new holes in the lower hoop.
The part of the bracket that bolts to the body is too wide, and interferes with various parts around the front portion of the drive shaft.
So, I cut the universal bracket going to the body, so it allowed me room near the drive shaft tunnel, to drill and bolt the shortened bracket to the body. You use the supplied nuts and bolts, and the supplied 2 body washers, to bolt the new shortened bracket to the body.
After you tighten up the bolts, you are finished. The drive shaft can just be removed with the safety loop in place, or if you want it is a simple matter to unbolt the lower portion of the loop.
One more safety item for you Tiger that is easy and cheap to do.