@carnut222 it's kind of hard to explain in writing.
Basically the shape at the end of the bar (ie on the outer side of each D bush in the above photo), is different to my car's original bar (the angle of each bend differs slightly). Also, if I measure between the middle of each 'eyes' at the ends of the bar, this one is 1070mm wide, whereas my original 21mm bar is 1100mm wide.
In terms of fitment, it was necessary to really wrestle with the bar to get it on to the end links, and even then, it fouled on the chassis/steering rack.
You can see in this photo (where I've already bolted up the D brackets, from memory) that it simply isn't 'long' enough to reach the end link.
(It probably would reach if the end link was adjustable forwards/back rather than just side/side, which from memory the DVS adjustable links are?)
I'd be interested to know if your stock bars are the same width between your 79 and 93 models.
Also I would be happy to let you test fit this one but postage cost would probably be prohibitive...
I think you're right about Falcon bars being available in 24mm. Falcon bars have their own issues though. I ended up fitting a 27mm one which has been OK so far but definitely doesn't sit as well on the end links as the original Volvo one.