1/48 Tamiya f-15

Hey, All. Anybody know if Tamiyas F-15C and F-15J are the same kit? Scalemate says the J has “new parts” but looking at the instructions and trees, I’m not seeing it. Found a good deal on a J but am thinking , if it builds as a C, do it as an ANG bird and use the decals to do an J MSIP from 2 Wing using the Tamiya decals. Also, anybody have a set of AAM-4s they would consider parting with? Could used 4 ,but 2 would work.

I agree everything looks to be the same minus the decals.