This ECM is for Broughams, Devilles,Eldorado,Devilles. Fleetwoods in the 81-84 range. The computer number is 4760 and is classed as the first model. The second model being 5120.It ran my Fleetwood Brougham just fine while I was getting my 5120 rebuilt.The only difference between the two is that I did not have the diagnostic feature active with the 4760.Not sure how that affects other model cars when installed.I have the 368cu(6.0l) engine with the DFI. This computer is for DFI cars.I'm asking $200 for it.