Jim,
5-1/2" between the lugs, and the lugs are centered on the centerline of the frame. This does not garentee that the hub was centered, and someone else will have to answer that.
The RH tube has an offset towards the front which will make it look 'kinked'. There should be about 3-1/8" clearance from the centerline to the inside face of the kink. From there back the RH side converges at a three degree angle, and the LH side (straight) at a one degree angle.
-Doug