The 140 should fit fine, (check the left luggage rack bolts), but will offset only to the left, leaving things just a touch off centered. The only time you'll notice is when trying to wrench on the left side with the tire on or going though a sweeper when you'll feel left and right track a little different.
You'll love the 880s. Very grippy and stable.
You'll love the 880s. Very grippy and stable.