WTT: 37x13.5x20 Nitto MT for 35x20

Like the title says, I'm looking at dropping my truck back down a couple of inches to haul a gooseneck so I need to drop tire sizes. Looking to trade my 37x13.50x20 Toyo MT's (title says Nitto but theyre Toyos) for a set of 35s. Must be MT's. My tires have around 70%-80% with no plugs or patches. Always rotated on time. Not too sure on the exact mileage but they have no more then 15k miles on em. Let me know what you have. YOU pay for the swap. We can meet at a Discount Tire and have tires swapped. You might have to add a small amount of cash (depending on your tire condition).