One thing you need to watch for is, I believe, caught on the latest iteration of the Italieri 1/48 kit and the Hasegawa 1/72 kits. On the real aircraft, there's a rather prominent scoop on the upper outboard aft section of each nacelle, just forward of where the IRS (Infra-Red Suppressor) starts. I know the various 1/72 kits I have (ESCI/AMT, Hobbycraft, and Italieri) do not depict this and the "elephant ear" is rather glaringly obvious; since it's the intake scoop for the oil cooler, it would definitely be there, no matter what IRS is fitted.