90mm Tank Guns

[DRG]

I have saved this and will review it when time allows.....

BUT

Brazil never had Tamoio or Osorio Tanks

THAT'S WHY THEY ARE CALLED "Engesa"....... IT'S A PROTOTYPE FORMATION !

you found this with MOBHack didn't you ?? If you had "found" them in the game you would have "found" the explanation text

Engesa Tank Platoon*
*
Prototype and initial production tanks for your use in hypothetical scenarios. Enough of these tanks were produced to field a company of various models should the need have arisen (for example, if Brazil was invaded). They can also be used in hypothetical scenarios where, for example, the USA did not intervene when Iraq invaded Kuwait, and Saudi Arabia would then have completed the planned purchase of 318 Osorios to use against Iraq.*
*
Engesa was formed as a private firm in 1963. Initially, it was involved in renovating World War II-vintage tanks. Engesa built wheeled APC's, such as the EE-11 Urutu amphibious APC, the EE-9 Cascavel armored reconnaissance vehicle, the EE-17 Sucuri tank destroyer, and the EE-3 Jararaca scout car, in addition to a wide range of other products. The EE-11 Urutu armored troop carrier is an amphibian that can also be used by naval forces. It is still used by the Brazilian Army. It made a success in the international sales market, and is in service in a number (over 20) of Armies worldwide, in addition to the Brazilian Army.*
*
Engesa's APC's were all based on a new proprietary suspension system, called "Engesa Boomerang". This ingenious suspension system, along with many other modifications, expanded the life span of many otherwise obsolescent World War II-vintage vehicles.*
*
Engesa embarked on an ambitious tank project with the goal of selling a modern tank to Saudi Arabia, and thereby winning more contracts worldwide. The prototype tanks went through several stages and finished an initial production run for trials. The Osorio was accepted for testing by Saudi Arabia and others, but Desert Storm intervened. The resulting close ties between Suadi Arabia and the USA led the Saudis to purchase M1 Abrams. Shortly thereafter Engesa filed for bankruptcy.*
*
Engesa has been dismembered, with some of its companies sold to private interests, and ordnance-related firms taken over by the state and integrated with the Indústria de Material Bélico do Brasil (IMBEL - Brazil's Industry of War Weapons and Equipments).*


So they stay exactly as they are and I'm betting there is more like that in your list