Help with fuel tank dimensions

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Tod here's a link to some pictures of the frame, i " guesured " the dimension from outside the rubber mounts to be around 180 mm but someone else may have a better measurement for that.
http://cb1100forum.com/forum/showthread....=fuel+tank

I hope your new tank will fit around those frame members.
Just a reminder that the fueltank also has a fuel level, fuelpump with connections for overflow and breather hose.