I've ran R62's for about 6 years now... currently I have a 94', 96', 98', 99' R62's the 94 has 1810 sep. hours and is for sale at $46,000 w_ header. I think 92's had chain drive on tailings return...by 94' all belt drive... went to Cummins 8.3l 260 hp available motor... thicker feed drums and heavier shoe material... other small changes but those are the main ones between 92' and 94' that I know of. More changes occur in later years. My 94' combine is located in Central Kansas probably you are to far away but you can use it as a reference price. Rotors are a lot easier to work on and get wheat out of the head better than the l's. I hope you get it bought for the money and works good for you. Steve