hi guys and gals just got another xbr ;this one is a basket case; most of the bits are there and look good but heres the problem there is no xbr motor with it .it has2 xl 600 motors [the old red motors]. they motors are stripped down ,ican build these myself but am wondering about a few things before i start work on it gearing compared to the xbr ;carbs the xl has 2 carbs ' and wiring problems it would be a nice project as there is a big bore kit and hot cam with it .......so if anybody has any adviceit would be very helpful thanks guys tommy ;dublin;