MTM2.com is fully working on my end, so do the truck and track pages, though you might want to update the links on both the Track Talk and Truck Reviews sections with these ones, should anyone choose to access the downloads from there. The current links on those sections lead to the 404 Not Found pages still.
https://www.mtm2.com/~trucks/trucks.php
https://www.mtm2.com/~tracks/tracks.php