All types share the same hull, turret, barrel, engine & transmission. Most of the improvements of the Doher are internal and can't be seen from the outside: Inertial Navigating System (INS), air filtering system, and some changes in the driver's panel & cabin and NBC protection added. The external, visual differences are:
1. Two sub machine guns on the Doher's turret, only one in the Rochev. The additional SMG is
positioned near the sight ballistic shield.
2. Electrical travel lock (known in Hebrew as "BiFoot") – in the Rochev one of the crewmen has to lock
manually the barrel, most of the time the driver, with the assistance of the sight operator. In the
Doher the crewmen can do it automatically, by electrical operation. The Doher's travel lock is
thicker than the Rochev's, and has a rectangle box in its front side.
3. External Generator – the Doher is equipped with external Generator, positioned instead the right-back
basket and its two external cells. Due to the lack of one basket, the left basket is a bit bigger (to
contain the camouflage cover).
4. Different shape of the commander's turret – the Doher's NCO turret can be locked in slit position, a
position that does not exist in the Rochev.
5. Different Tactical markings – the upgraded capabilities of the Doher changed in some manners the
way the artillery battery is operated. Due to this fact, beside the different kind of V's and numbers,
one can find also a Hebrew letter (Aleph, Beit, Gimel) markings.