So yesterday the seller and I agreed on a final price, I went over with cash in hand, and went home with lots of parts. After packaging up a few of the orders, I took a closer look at how to mount the highway pegs per some advice on the Connie Forum linked above. The lower radiator mounting bolts go through the engine into the bracket and are where the supports for the highway pegs go. These are significant bolts with 14mm heads and likely haven't been removed from my bike until last night. NOTE: Be careful breaking these bolts free! Have a friend hold the bike or otherwise support it or you might become a "CDA" member. Once these bolts are out, the highway peg mounting post screws into their place. I used an adjustable wrench but a large box-end wrench would work too. A small extension arm then mounts in place with what I seem to remember is a 19mm bolt and two "teeth" washers. Finally the footpegs attach to the other hole in the extension arm. Once everything was in place I tightened both the bolts passing through the extension arm with about a 45 degree angle forward and down in the arm.
One challenge is the left side mounting post has to clear both the engine case and the radiator hose, so it may take a few more minutes to get into place than the right side. Also, I ride this bike without lower and mid-fairings, so no removal or trim work was required. Standard 86 side fairing will require trimming/cutting and some 87-06 fairings may require a small amount as well.
So far I have a few short rides and like the pegs, although another inch or so on the extension (assuming it would still be rigid enough) would likely benefit most riders. I'm 5'10" with a 32 inch inseam and consider myself an average size guy. If I have the arch of my foot on the peg my knees are still fairly bent. By resting my upper heels on the peg my legs are straight. Still I'm quite happy with them and look forward to my upcoiming road trip to test them out.