It has a lot of similarities to my Sears puddlejumper, or 'Orange Crush, as I've heard it called also. It has the angled engine plate, a swingarm, the forks and front fender mounts look the same. My handlebars are mounted to the forks with u-bolts, not risers but that's no big deal. My gas tank is exactly the same (hard to find a cap that fits, trust me!), and they both come with a TAV, mine's a Comet 20. The big difference - the frame itself. I'd like to see what's under that seatplate (home-made? Can't see the pic while I'm typing this, but it didn't seem stock) so we could see the upper shock mount area. I've always wondered who the parent company of my puddlejumper was, but I hear Manco tossed around a lot when people talk about puddlejumpers. I wouldn't be surprised if your bike was built by the same company, or had some link to my Sears bike. I'll post some pics of mine tomorrow (today, I guess!). Good luck!
