I have dicked around with 7's for a long while.
My conclusion: they're funny.
That's all. It's just really fucking funny to bring something like that to a rally.
It's not variated. You need a machine shop to make the thing variate.
It has a wimpy stock exhaust. You absolutely can't put anything on it without hacking and welding on a serious level.
If you want to rock your 7 stock, or with some rad porting, do it, but you won't be putting sweet treats parts.
I've broken my engine mounts twice, bent two rear rims, had a 70 kit and a janky home-welded exhaust, bent my forks, etc etc...
I sold the bike, but it somehow ended up back in my possession. If it stays around my house much longer, i'm welding up mounts for an E-50.