MACK ULTRALINER ADDON MOD ATS 1.6.X BY ATS mods · June 14, 2017 This mod adds compatibility on Mack Ultraliner ATS 1.6.x with: SiSL Megapack v2.5 (1.6.x UPDATE).
![High-geared [6-speed] Transmission mod for T680 & W900](http://www.atsmodsland.com/wp-content/uploads/2016/04/High-geared-6-speed-Transmission-mod-for-T680-W900-520x245.png)
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