I would like to install AFX style rotor in my 1688, wondering how late of model combine will fit. I found a 7130 in a salvage yard they are not sure if it will fit it isn’t out yet so can’t compare. They did say coupler on the back is 8 bolt instead of 6, but if splines are the same it doesn’t matter. I have also thought about Abilene machine after market bolt in kit.