If the pillion peg mount is toothy like this one, you can probably install the adjustable pegs from the big bikes:
There's some rubbery schmutz on that one, but you should get the idea.
I'm also seeing that you may have some rearset rider pegs. That shifter linkage looks long, and the peg short. Here's how it looks on my son's R80 Mono (Monoshock bikes are based on the R65 frame):
I did a similar thing with the shifter side peg on my /6, which is the bike that had the pillion pegs set high and back and there were no clearance problems. But she was definitely more comfortable with her very long legs on the /7, which had the pegs low and forward and the stock rider peg position.
My new pillion is shorter and I expect we'll have no foot conflict on whichever bike.
