hi,
had a look at car today, and i think it must be meant to be as Dave said about the reel bolting onto top of rear shock top mount! strange but true...
as there is a letterbox type slot in the metal under the hole in c pillar and above the shock top.
but mine has no rear belts so i cant say further than that.
It should be easy enough to make up a bracket to get the 33 belt to fit on the shock, just needs a 90degree bend and two holes ...
good luck.
Mark.
ps its coming on isnt it

most of my Ti is in the shed behind the garage!