I have used their intakes for the 1/32 scale Revell F-4 and they fit perfect. You have to use them on the kit they were specifically designed for. If they are made for the Monogram kit, you can not use them for the Hasagawa kit, as they will not fit correctly.
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.