Notes: This is an upgrade of the old M-44 155mm self-propelled howitzer, which Turkey bought from the United States in the 1950s. The original gasoline engine was replaced with a more fuel-efficient diesel engine, the transmission was replaced in accordance with this new power pack, the fuel tank size was increased, the electrical system was upgraded, and the gun was replaced with a standard NATO 155mm howitzer.

Twilight 2000 Notes: 186 of these vehicles were converted beginning in 1986, and saw extensive service in Northern Iraq and Eastern Europe during the Twilight War.

Notes: This is an upgraded version of the old M-52 105mm self-propelled howitzer, which Turkey bought from the US in the 1950s. Improvements include the replacement of the howitzer with a 155mm NATO howitzer, replacement of the original gasoline engine with a diesel engine, improvement of the transmission, and the mounting of the gun in a larger turret. Computer fire control is also added, allowing the crew to accurately fire if the target location is known. As the electrical system was not up to par with the new systems, this has been upgraded as well; the suspension has also been upgraded to allow the increased weight. The higher power gun also required the addition of a recoil spade at the rear of the chassis, which must be lowered before firing of the gun.

Twilight 2000 Notes: 365 of these conversions were available at the beginning of the Twilight War.