The most obvious is the cockpit and intakes. Go with the Verlinden Cockpit update. That will correct a lot of errors. The update does not include the standby compass located on the windshield bow, or the RHAW scope on the forward right glare shield, so you would have to add those. The cockpit update wasn't available when I built my RF. I spent several weeks adding detail to the cockpits. Also be sure to put the lower eject handles on the seats, between the pilots legs. As for the intakes, I recommend Seamless Suckers intakes. Paint the insides gloss white. Also the inside of the vari ramps, parts 47 & 48 are gloss white. Go with after market wheels as the kits wheels are all wrong.
The instructions would have you put clear parts, # 38 on the forward RWR. If installed at all they would be black, not clear. The instructions tell you to paint the interior of the wheel wells and gear doors flat white. They should be gloss white. The gear struts should also be gloss white. There is no tail hook uplock mechanism so you will have to scratch build it. The inside of the speedbrake is flat red, not white. The speedbrake well is gloss white. The inboard pylons do not have the pylon adapter installed. If you use the pylons you will have to scratch build the adapter. The stores swaybraces go on the adapter, not on the pylon. It gives you the option to install AIM 9 launchers on the pylons. I NEVER saw these installed on the RF. I am not saying they weren't , as it could have been a later modification. If you use them, they would attatch to the adapter, not the pylon. I left the pylons off of my model as we did not have them installed in '67-'68 time frame. The aircraft wasn't modified to carry them until after '68. The old style 600 gal. tank does not have the sway brace fins installed. If used, you will have to add these.
Depending on the time frame of your subject, some of the antennas included in the kit were for a later time frame. Do your research before installing these. Also the ALE40/41 chaff/flair dispensers were not added to the pylons untill after 1980.
The J-79 engines used on the F-4 were bad smokers. The area aft of the exhaust should be painted metalizer exhaust to give it that dirty look.
The Revell 1/32 F-4E contains a lot more errors; the biggest is the rear missle wells being too long. But, that is another subject.
Berny
Phormer Phantom Phixer
On the bench
TF-102A Delta Dagger, 32nd FIS, 54-1370, 1/48 scale. Monogram Pro Modeler with C&H conversion.
Revell F-4E Phantom II 33rd TFW, 58th TFS, 69-260, 1/32 scale.
Tamiya F-4D Phantom II, 13th TFS, 66-8711, 1/32 scale. F-4 Phantom Group Build.