i recently bought what i thought was a 73 cb 750 excellent shape but upon inspection the serial # says cb 750 e . i got 2 old manuals with it but they donĀ“t even mention the e ...thought some of you guys could help .it has a fairing and i guess original racing handle bars kind of lay out style. any help would be appreaciated.no one around my area had neither see one or knew anything about it thanks