I just checked and it does appear to be an option. On my 87 RS there is a a blanked hole on the head for the front bracket and the rear one fits to one of the gearbox bolts. I was able to place the shield above the pipes but did not fit it. I can share pictures if you want.
The 4V K100/K1100 exhaust manifold pipes' curvaceous design seems to create a wider space between the outside edge of the pipe assembly and the transmission. The shield fits within that space. The 2V's relative straight pipe layout doesn't create that extra space. Grinding the outside of the shield could be an option.
Of course, this apogee of deductive reasoning took place while gazing at two-dimensional Brick photos in a pre-coffee environment—a condition that will now be corrected.
I am very much post coffee so gave it a try. It fits !. I did not remove the gearbox bolt as I need more than coffee to do that, but it lines up perfectly and clears the pipes. The shield is off a K1100RS that I am working on otherwise it might be a permanent fixture. This is fitted to a 87 RS