Keep in mind that your pictures show two different vehicles: the top picture shows an M1245, the Special Forces variant, introduced by Oshkosh later than M1240, the variant shown in the second picture.
The manual winch for the spare tire is present, optionally, in both the models.
I’ve seen the FLIR unit only in M1245, there isn’t be space to accomodate it in the rear of an M1240.
Keep in mind that the M1245 is different in many parts from the M1240.
I have converted the same RyeField model you have (it is really a great kit) into an M1245 adding a lot of 3D designed parts; if you are interested, have a look at this thread here in KitMaker forums.