If you get a GL650 then parts are easy to find at the moment, because I have an entire bike being parted out, but yes, the 650's are hard to find parts for, took me quite a while to gather MOST of what I needed to put my GL650 together for the 5 mile motor blowing ride.... But I learned a valuable lesson, the 650 has an oil pan, you should drop it and clean the oil pickup and the oil pan before taking it out on the road, although I'm guessing the engine had some harm done to it before my little ride... Although Snow4brains, if you want to make a few hour ride, you can sit on a GL650 at least, can't let you ride it for obvious reasons, although you could push it around and make engine sounds.......
For the 5 miles I put on the GL, I was AMAZED with the power, you gotta be careful on those, put it sideways pulling out of the gas station riding like it's my 500 lol, so don't ride it like you do the 500 when you're riding hard, unless you are ready for it, and know what it'll do. I was expecting it to be more powerful, but not THAT powerful, surprised me a lot, considering I just rode a 1200 sportster that didn't have NEARLY that much go