I have to apologize, but I was assuming that the LeMans II was going to be more like a CX100. None of those in the US for the most part, so I've not really played with one. That being said, your photo looks 850 LeMans, not LeMans II. LM I fairing, (not LeMans II/CX big fairing with lowers), dash, front turn signals, etc. And it looks like there is already something aftermarket on there for clip ons, they're certainly not stockers. The issue I saw on the CX was the beyond the previously noted headlight "ear" rubbers, was that the length of the front brake light switch, only capturing one brake line, had it's contact spades hitting the side of the big rubber CX100 dash. But I made it work easily. Being as it would seem you don't have that big dash, maybe you can get away with it as is. But I can't quite tell, are you capturing TWO front brake lines with one banjo bolt? That would add more length.
Being as I was swapping different parts out, I now maybe shouldn't say that my experience is valid. We're suddenly playing apples and oranges. You might quantify exactly what you have on there right now to start with, and than re visit. Maybe more pics.
TdF