I suppose by now you have bought one-? Mine is a 1982 Gn 250 and looks identical to the picture on the Bikez page for yours,except no disc and my pipes are rusty! Have had mine on the road for about a month and am really happy with it,it seems to be the smoothest motorcycle I´ve ridden,including 2 BMWs.Am just getting data on M/G,inaccurate figure of 60 now-as I go through more fillups I´ll get more "sig figs". Electrical system is a problem,the black box was shorted. [bought the bike from an old friend who figured I´d be able to solve this problem.]So I used the rectifier out of a car alternator and temporarily am simply using a big 20 ohm resistor to supply some charging current to the battery.Also put a headlight switch in. I have designed a better regulator using a big watt transistor,a 7815 regulator, and a Zener diode. However the Electronics supplier is verry slow!Also I have found that if the batery is low and barely cranks it over, it won´t start! Certainly the machine races through the gears fast, and the Bikez rating on top speed is probably correct.Haven´t had it out of Sayward yet so have yet to give it a good go.