You saved one that I would kill for, I want that HI-LO in the worst way. I have never seen one in person only in pics. The easiest way to tell if the lights are original is to look at the back of them, there will be a small stamping in the back that will say - guide - They do look to be original from the pics.
If you decide to part it out I would love to have that HI-LO.
I just took a look at the lights and they do not say "guide" on them. They have "NAPA 451" stamped on the back. At least they match.
I put some juice to it tonight (basically because I could't stand it anymore) and it turns over fine, however, it doesn't have much in the way of compression. Maybe its from sitting for the past ten or so years but I doubt it. I put a little gas in it and got it to pop once and that's about it. I took the plug out, put my finger over the hole and cranked it. It didn't even try to blow my finger off the hole.
One headlight works. These appear to be the type that has a replaceable bulb.