Per the title, I have the opportunity to buy a used 110 roof rack. Would like to know if this will fit my 130 even if a bit shorter.

 

Are you sure the rack itself as any shorter ? The roof mounted tracks it mounts onto are identical in length. I have measured the 110 vs 130 roof and similar to the rest of the vehicle, they are identical until the very end of the rear, basically it's like they simply added the 14" onto the rear, with another roof glass of course and few interface adjustments at the D pillar.

You can see this also on any 130 with the factory rack because there is a big empty zone of roof surface whereas on the 110 the rack ends up almost at the end of the roofline.