So today at work coincidentally, I had an installment sale and there was Seller financed interest, where the name of the buyer is entered on the 6252. Then the Sch B says to go look at the Seller Financed Interest statement, so that would show the name of the buyer and match to the 1099-Int. I just need to get his SSN and address.

Still, I have never seen a 1099-Int from a buyer issued to a seller for an installment sale, and they have not done this in prior years. They had been issuing a 1099-Misc for rent payments, and we finally got that corrected.