Is it possible to swap tracks?

Could I swap tracks for say like the Marias Pass route especially the winter snow tracks with something like GN Tracks without using the world editor? Are there any good freeware track textures?
https://www.railworksamerica.com/forum/
https://www.railworksamerica.com/forum/viewtopic.php?f=34&t=11058
OwainGlyndwr wrote:RW Tools has an excellent and easy way of swapping tracks out for your preferred option.
http://www.rstools.info/downloads.html
You can download the help manual separately.
O.G.
buzz456 wrote:http://www.3dtrains.com/
All kinds of free and payware upgrades from this site. Make sure you are looking in the RW section not the brand x.