Well, there's a few different ways to tackle this. One, you could just use the truck file from another truck from here and use it as a reference for yours, or you could use Outlawed's updated version if you want a more realistic handling and performing truck. However, if you want to build your own truck file, you could always try using the RoR's wiki for help. The two links are located in the underlined words btw. Hope this helps.
