I dont know if this is the wrong place as i do not use these forums often. But i opened "peelp50blue" truck file in notepad and edited it to make it a bit higher revvs. How do i convert the files. Thanks.
I'm going to assume you opened the .zip using Windows Explorer
To put the .truck file back into the .zip file, simply open the .zip file in Windows Explorer again, and use your mouse to drag the .truck file into the window. It should just replace the file with the new one you edited. (just tested this myself and it worked for me)